Probability Essay Example | Topics and Well Written Essays - 1500 words

Probability - Essay Example The word probability originated form the Latin word probare that means informal. It means that is there is nothing certain and exact associated with an event, and that happenings are uncertain and there are probabilities that are associated with them. Probability can be defined as the study that is concerned with locating certainty in uncertain events. Probability is known as the method of weighing evidence and opinion about uncertain and complex environment. Christiaan Huygens is supposed to be the first person to treat probability with scientific principles to provide a more refined form of the term in the year of 1657. There are several functions of probabilities. Distributions are considered one of them. These functions are used to assign the possible and probable events to the entire series of the events. There are several types of distribution too, that is continuous and discrete distribution. Probabilities distribution can be categorized into two classes: discrete and continuo us. There are many ways to divide probability up in an equal and proportionate manner but the best possible method is to use the probability density function (Fadyen, 2003). Development in this field is taking place continuously and rapidly. The world is changing as never before due to technologies, and these technologies are dramatically affecting the speed and complexity of probability calculations. Computers and spreadsheets are just two important examples of this shift. The major gains in communication complexity and speed have also played an important role. And this is apositive aspect because the development in the field of statistical data analysis is often caused by advancement in the other fields in which the various methods of statistical data analysis are productively applied. Probability is a statistical technique which is used for analyzing the situations that are confined by random events. For quantitative analysis of many human activities, which generally

Roles you play Essay Example | Topics and Well Written Essays - 500 words

Roles you play - Essay Example The first task consisted in eliciting support from the members of the community through their becoming members of this group. A few of us, including myself, were given the task of persuading as many community members as possible to become members, and involve themselves in the activities of planning, implementing, and monitoring of the community development activities. Thus, my first group task was that of INITIATOR-CONTRIBUTOR. This role was assumed by me, because of the motivation and energy that I had for the objectives of the group, and my ability for persuasive communication. This role was effective in drawing many members to the group. It was not long before a majority of the members of the community had become members of the group, and the forming phase was over. We next had to get down to the storming phase or the phase in which the agenda of group activities would be decided. At this stage my role in the group changed to that of an ELABORATOR. This role was assumed by me as I had the capacity to listen and understand the opinions of the members of the group, and put it to the group clearly, for better understanding in the group. This role was effective in ensuring that every member had a proper voice in the setting of the agenda for the group activities. Having sorted out the agenda, we next moved on to assigning tasks and roles for the members of the group. This was the most disruptive phase encountered thus far. In this phase I played the role of a GATEKEEPER-EXPEDITER. Every member needed to know the opinions of others, and also have a say in the assigning of roles and tasks, for an amicable way in going about the assigning and acceptance of roles and tasks. I assumed this role because of my listening and communication skills, persuasive nature, and high energy levels. This role of mine ensured that communication between members was maintained during the disharmonious periods, so that tasks and roles

Probability Essay Example | Topics and Well Written Essays - 1500 words

Probability - Essay Example The word probability originated form the Latin word probare that means informal. It means that is there is nothing certain and exact associated with an event, and that happenings are uncertain and there are probabilities that are associated with them. Probability can be defined as the study that is concerned with locating certainty in uncertain events. Probability is known as the method of weighing evidence and opinion about uncertain and complex environment. Christiaan Huygens is supposed to be the first person to treat probability with scientific principles to provide a more refined form of the term in the year of 1657. There are several functions of probabilities. Distributions are considered one of them. These functions are used to assign the possible and probable events to the entire series of the events. There are several types of distribution too, that is continuous and discrete distribution. Probabilities distribution can be categorized into two classes: discrete and continuo us. There are many ways to divide probability up in an equal and proportionate manner but the best possible method is to use the probability density function (Fadyen, 2003). Development in this field is taking place continuously and rapidly. The world is changing as never before due to technologies, and these technologies are dramatically affecting the speed and complexity of probability calculations. Computers and spreadsheets are just two important examples of this shift. The major gains in communication complexity and speed have also played an important role. And this is apositive aspect because the development in the field of statistical data analysis is often caused by advancement in the other fields in which the various methods of statistical data analysis are productively applied. Probability is a statistical technique which is used for analyzing the situations that are confined by random events. For quantitative analysis of many human activities, which generally

Zizeks Concept Of Two Revolutions Essay Example | Topics and Well Written Essays - 4000 words

Zizeks Concept Of Two Revolutions - Essay Example Zizek’s work has been criticised for inconsistency and Parker argues that â€Å"there is no Zizekian system of philosophy because Zizek, with all his inconsistencies, is trying to make us think much harder about what we are willing to believe and accept from a single writer† (Parker, 2004, p.120). Indeed, to this end Zizek argues himself that we should constantly challenge our ideologies and philosophies. This is particularly evident with Zizek’s extrapolations pertaining to the concept of the two revolutions as highlighted by his discussion in â€Å"Revolution at the Gates, A Selection of Writings from February to October 1917† (Edited by Zizek, 2002). To this end, it is submitted at the outset that at the heart of Zizek’s argument for the necessity of two revolutions is the idea that the first revolution challenges the pre-existing form and the second revolution ensures that the form itself is revolutionised to attain the true purpose of the intended objectives of the â€Å"revolution† in what Zizek terms the â€Å"utopia†. Directly correlated to Zizek’s perception of the two revolutions is the use of Lenin as a symbol to highlight the flaws of traditional social theory highlighting historical circumstance and context as the significant causal triggers for revolution.

Effect of Potential Difference on Copper Coating

Effect of Potential Difference on Copper Coating Design Research Question: What affect does the potential difference (V) across the circuit has on the copper coating on an iron metal? Hypothesis: My hypothesis is based on the Ohm’s Law which states V = IR, where V is the potential difference across the circuit and ‘I’ is the current present in the circuit and ‘R’ is the resistance. (When ‘R’ is constant) The above equation states that as the current increases, the electron flow will also increase. Thus increasing the potential difference across the circuit which in turn increases the copper coating on iron metal. Variables: Independent Variable: Potential difference Dependent Variable: Change in mass Control Variable: Concentration of the electrolyte Resistance of the circuit Temperature Distance between the electrodes Materials Required: Voltmeter (0.2 V) Ammeter (0.1 mA) Copper Plate Sand paper Iron nail Rheostat Connecting Wires Electrolyte (1M CuSO4 solution) Beaker Alligator Clips Weighing Scale (0.01 g) Diagram of the experiment: Procedure: Set up the experiment as shown in the diagram above. Take a sand paper and remove the rust from iron nail. Now place the iron nail on a weighing scale to get its weight. The iron nail should be now attached as the anode The potential difference should be kept as 1V Pour the electrolyte into a beaker and dip the iron nail into it for about 10mins. After 10mins, remove the iron nail and dry it. Repeat the above procedure for V = 1.5, 2, 2.5 and 3. Steps (1-8) should be repeated twice. Process the obtained data and record the observations. How to control the Control Variables: To control the concentration of electrolyte, make sure that the same electrolyte is used throughout the experiment. Resistance should be kept constant for the Hypothesis to be true, and for this a rheostat is used in the experiment by which resistance can be controlled. The experiment will be performed in a closed lab environment to ensure that the conditions of the equipment are not affected by changing atmospheric conditions. The distance between the electrodes should be kept constant because if the electrodes are not kept in a constant position, the rate of transfer of electrons will increase hence the mass deposited will also increase. Data Control and Processing Raw Data Table:- The Raw Data Table consists of the data obtained from two trials and is shown below in a tabular form Table 1 Table 2 Qualitative Observation: Reddish-Brown coating on the iron nail when it is dipped in the electrolyte. When the current is passed, due to the flow of electrons from anode to cathode, the copper coating thickens as if it is trying to displace the iron. The iron nail becomes blunt due to the heavy deposition of copper. After taking down the readings and noting the associated qualitative data, the raw data table is now processed and the data is represented graphically so that a better analysis could be done. Processed Data Table: The processed Data table consists of two tables showing the change in mass after the data is obtained. A graphical representation of the data is also done. Processed Table 1: Change in Mass was calculated by subtracting the initial mass from the final mass, For V = 1.0  ± 0.1, Change in mass (ΔM) = Final Mass – Initial Mass = 1.596g – 1.560g = 0.036g Similarly, Change in Mass was calculated for different Potential difference shown in the table. Processed Table 2: Similarly for this table, For V = 3.0  ± 0.1 Change in mass (ΔM) = Final Mass – Initial Mass = 1.889 – 1.797 = 0.092g Graphical Representation: Trial 1 The above graph shows the relationship between Change in mass and Potential Difference. The obtained graph resembles a linear graph and the error bars are plotted. A trend line is also made to pass through all obtained values. From the analysis of the graph of Trial 1, it can be observed that as the Potential difference increases the change in mass also increases which means that the amount of copper deposited increases with increasing potential difference. Similarly, graph for trial 2 is shown below, Graph 2 The graph obtained for Trial 2 also resembles a linear graph but there are some differences between the graph obtained for trial 1 and trial 2. As Potential difference across the circuit increases, the Change in mass also increases which means that the copper coating thickens with increasing Potential difference. Further Calculations are done to find the exact difference between both the trials, Calculations: For trial 1, The equation for the graph is y = 0.0296x + 0.005, Finding the slope of the above graph, m = 0.0296 Slope = 0.0296 gV-1 The slop obtained from differentiating the equation states that when 1V is increased, 0.0296 of Copper deposition takes place. This cycle continues for 1V increase. Calculating the moles of Copper, Moles = Moles = Moles = In Copper Sulphate, a +2 charge is present on Copper hence the required electrons will be as follows, Calculating the transfer of charge, Charge transferred = = 89.60 C Increase in the current = = 0.149 A For Trial 2, The equation of this graph is y = 0.03x + 0.0058 By differentiating the above equation, m = 0.03 gV-1 Calculating the moles of Copper, No. of moles = Mass à · Molar Mass Required amount of moles = = 9.44Ãâ€"10-4 mol at 1 p.d Calculating the transfer of Charge, Charge transfer = = 90.95 C Increase in the Current = 90.95 C à · 600s = 0.151 A Conclusion and Evaluation Conclusion For Trial 1, The Charge transfer obtained is 89.60 C For Trial 2, The Charge transfer is 90.95 C The difference between both the charges = 90.95 – 89.60 = 1.35 C Uncertainty of the experiment cannot be found out because the slope of both the graphs are different. From the graph, it is seen that, Evaluation The major reason for this deviation from the trend line plotted in the graph indicates that the resistance was not controlled properly. The graph is plotted on the basis of the Ohm’s Law stating, when the Resistance ‘R’ is constant but in this experiment, both trial one and trial 2 have different value for Charge transfer thus it can be concluded that the experiment was not accurate because of the presence of fluctuating Resistance. Errors that may have occurred The major reason for the experiment going wrong was due to an improper rheostat. The rheostat didn’t have a proper grip between the coil and movable scale. The scale may not be properly attached to the coil hence leading to a deviation between the obtained values. While removing rust from the iron nail using a sand paper, it may have had happened that some amount of rust remained on the surface of the iron nail and was not removed due to ignorance. The experiment was performed for approximately 4 hours. The experiment on the whole was not performed on a single day and hence some discrepancies in the solution may have had happened. The instruments used maybe were not calibrated properly. Number of trials taken in the experiment is only two which is very less as it does not give a big picture of the errors occurred while performing the experiment. How to improve the experiment The experiment can be improved to a greater extent by using a rheostat which has a good grip between the coil and the moving scale. This can be done by checking the instruments before performing the experiment. A fresh iron nail should be taken for the experiment. If it is not taken, then due to carelessness, some rust may remain on the iron nail and at one point it will become so thick that removing it with a sand paper won’t be possible. The experiment should be conducted for a shorter period of time and should be performed on one day itself because if the solution is kept open, it may happen that the solution will degrade or will react with air. Instruments with proper least count should be taken to avoid any systematic error. A minimum of five trials should be taken to reach an accurate conclusion.

Secrets in Conjugal Relationships Essay -- Literary Analysis

â€Å"Is it always a betrayal to talk about your husband with another man? What about girlfriends or astrologists?† (Dormen). In modern society, people’s feelings and desires are limited by rules of law and morality, especially when they relate to marriage and conjugal relationships. In The Storm, Kate Chopin raised a moral issue of adultery between characters of the short novel-Calixta and Alcee. She discussed the questions based on the metaphor of storm and the lack of passion in Calixta and Bobinot’s marriage. Similarly, in A Doll’s House, Henrik Ibsen scrutinized an issue of a marriage lacking love. He depicted relationships between Nora and Torvald and showed how imperious attitude and misunderstandings ruined conjugal relationships eventually. Both stories are connected by a common problem of secrets that arose from misunderstandings between the spouses. They solved the problem of misunderstanding in different ways, depending on cultural and personal distinctions of the characters. Therefore, the stories ended differently. Chopin concluded that the adulterous act made positive short-term changes in the marriage depicted in The Storm. In contrast, Ibsen ended his play A Doll’s House by stating that lack of understanding and communication led to the marriage collapse. In her short novel The Storm, Chopin explained how an extramarital affair between Calixta and Alcee became a factor benefiting the marriage. Chopin ended the story with the words, â€Å"So the storm passed, and everyone was happy† (123). The story is interesting not only because of the conclusion that infidelity had a beneficial short-term outcome to the family relationships, but also by intricacies that resulted in the happy end. In the middle of the novel, Chopin utiliz... ...pt unrevealed because of her naivety, passionate and pure love to the husband, did not contain any vicious deeds or intentions. However, upon revealing the secret, the true attitude of the couple to each other uncovered and Nora preferred to live alone to life with the husband who called her a criminal and decided to part with her for a formal mistake that saved him love. Works Cited Bartee, Johanna. The Storm: More Than Just a Story. Virginia Wesleyan College , n. d. Web. 09 May 2012. Chopin, Kate. The Storm. Freewebs Com, n.d. Web. 09 May 2012. Goldman, Emma. The Social Significance of the Modern Drama. Berkeley. Edu, n.d. Web. 09 May 2012. Ibsen, Henrik. A Doll's House. Ed. Jim Manis. The Pennsylvania State University, 2010. Web. 09 May 2012. Dormen, Lesley. Secrets and Lies: The Truth About Conjugal Discretion. Hearst Communications. 26 July 2010.

What Does Nozicks Experience Machine Argument Really Prove? :: Philosophy Philosophical Papers

What Does Nozick's Experience Machine Argument Really Prove? ABSTRACT: Nozick's well-known Experience Machine argument can be considered a typically successful argument: as far as I know, it has not been discussed much and has been widely seen as conclusive, or at least convincing enough to refute the mental-state versions of utilitarianism. I believe that if his argument were conclusive, its destructive effect would be even stronger. It would not only refute mental-state utilitarianism, but all theories (whether utilitarian or not) considering a certain subjective mental state (happiness, pleasure, desire, satisfaction) as the only valuable state. I shall call these theories "mental state welfarist theories." I do not know whether utilitarianism or, in general, mental-state welfarism is plausible, but I doubt that Nozick's argument is strong enough to prove that it is not. I Nozick's well-known Experience Machine argument can be considered as a typically successful argument: as far as I know, it has not been very discussed and has been widely seen as conclusive, or at least convincing enough to refute the mental-state versions of Utilitarianism. (1) Indeed, I believe that if his argument were conclusive, its destructive effect would be even stronger. It would not only refute mental-state utilitarianism, but all theories (whether utilitarian or not) considering a certain subjective mental state (happiness, pleasure, desire satisfaction) as the only valuable state. I shall call these theories "mental state welfarist theories." (2) I do not know whether utilitarianism or, in general, mental-state welfarism is plausible. But I doubt that Nozick's argument is strong enough to prove that it is not. This note tries to explain my doubts. Let us begin by briefly recalling the argument: "Suppose there were an experience machine that would give you any experience you desired. Superduper neuropsychologists could stimulate your brain so that you would think and feel you were writing a great novel, or making a friend, or reading an interesting book. All the time you would be floating in a tank, with electrodes attached to your brain. Should you plug into this machine for life, preprogramming your life experiences? [...] Of course, while in the tank you won't know that you're there; you'll think that it's all actually happening [...] Would you plug in?." (3) II According to a first interpretation of Nozick's argument, it proves (or attempts to prove) that we have strong reasons not to plug into the Machine. Such reasons could not be accepted by mental state Welfarism. What Does Nozick's Experience Machine Argument Really Prove? :: Philosophy Philosophical Papers What Does Nozick's Experience Machine Argument Really Prove? ABSTRACT: Nozick's well-known Experience Machine argument can be considered a typically successful argument: as far as I know, it has not been discussed much and has been widely seen as conclusive, or at least convincing enough to refute the mental-state versions of utilitarianism. I believe that if his argument were conclusive, its destructive effect would be even stronger. It would not only refute mental-state utilitarianism, but all theories (whether utilitarian or not) considering a certain subjective mental state (happiness, pleasure, desire, satisfaction) as the only valuable state. I shall call these theories "mental state welfarist theories." I do not know whether utilitarianism or, in general, mental-state welfarism is plausible, but I doubt that Nozick's argument is strong enough to prove that it is not. I Nozick's well-known Experience Machine argument can be considered as a typically successful argument: as far as I know, it has not been very discussed and has been widely seen as conclusive, or at least convincing enough to refute the mental-state versions of Utilitarianism. (1) Indeed, I believe that if his argument were conclusive, its destructive effect would be even stronger. It would not only refute mental-state utilitarianism, but all theories (whether utilitarian or not) considering a certain subjective mental state (happiness, pleasure, desire satisfaction) as the only valuable state. I shall call these theories "mental state welfarist theories." (2) I do not know whether utilitarianism or, in general, mental-state welfarism is plausible. But I doubt that Nozick's argument is strong enough to prove that it is not. This note tries to explain my doubts. Let us begin by briefly recalling the argument: "Suppose there were an experience machine that would give you any experience you desired. Superduper neuropsychologists could stimulate your brain so that you would think and feel you were writing a great novel, or making a friend, or reading an interesting book. All the time you would be floating in a tank, with electrodes attached to your brain. Should you plug into this machine for life, preprogramming your life experiences? [...] Of course, while in the tank you won't know that you're there; you'll think that it's all actually happening [...] Would you plug in?." (3) II According to a first interpretation of Nozick's argument, it proves (or attempts to prove) that we have strong reasons not to plug into the Machine. Such reasons could not be accepted by mental state Welfarism.