BIO 2003 SUMMATIVE ASSIGNMENT 2 Introduction: The report analyses the result of a study on workers from brick and tile industries conducted by the Health and Safety Laboratory (HSL). HSL put down few criteria’s to the workers which being that neither of the workers from the tiles and brick industries should have worked in both the industries and that they did not smoke. The criteria’s put across was an assurance to attain reliable results. The essence of the study lies in detecting any difference
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Potato Batteries: Veggie power! Data and Analysis Background The battery was invented around 1800 by Alessandro Volta in Italy. It has become an indispensable part of modern life. Why are batteries so useful? Because they convert chemical energy into electrical energy. You can use this electrical energy to light a flashlight‚ to start a car‚ or to listen to your favorite music. We made a simple battery out of a potato by placing in it a zinc strip and a copper strip. At the zinc strip‚ the
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Statistics and Psychology Paper There are numerous applications of statistical reasoning and research methods in the field of psychology. From simple aspects of reading and interpreting psychology articles‚ to completing personal research‚ statistics is a necessary concept to understand. The scientific method is essential to research‚ and many of the concepts cross the lines into statistics. It is also imperative for us to compare and contrast the characteristics of primary and secondary data
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Lecture Notes: Statistics A note on basic statistics Statistics is the practice or science of collecting and analyzing numerical data in large quantities. So there are two parts1. Collection of Data 2. Analysis of Data- understanding what the data says. Steps in Statistics To carry out any statistical operation‚ the following steps need to be followed‚ in the given order: 1. 2. 3. 4. 5. 6. Sampling Estimation Hypothesis Generation Testing Regression Prediction Collection of Data: Sampling
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In addition to feeling the effects of acute panic and fear in public settings‚ Randall’s condition has worsened to its current state of borderline OCD practices‚ including the need to go back to his home after leaving and verifying his door has been appropriately locked multiple times‚ not being able to leave until he verifies that there is ample supply of toilet paper in the car‚ and the need to
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Confidence Intervals and Hypothesis Testing Name: Math 256‚ Nelson 1. A soft-drink machine is regulated so that the amount of drink dispensed is approximately normally distributed with a standard deviation equal to 1.5 deciliters. Find a 95% confidence interval for the mean of all drinks dispensed by this machine if a random sample of 36 drinks had an average content of 2.25 dl. 2. The heights of a random sample of 50 college students showed a mean of 174.5 centimeters. Assume the
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In each of the assignments in this course‚ you will be dealing with the following scenario: American Intellectual Union (AIU) has assembled a team of researchers in the United States and around the world to study job satisfaction. Congratulations‚ you have been selected to participate in this massive global undertaking. The study will require that you examine data‚ analyze the results‚ and share the results with groups of other researchers. Job satisfaction is important to companies large and
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Syllabus for Statistics Course No. 21090024 Period：54 Credit：3 Course Nature：Compulsive Assessment: Usually 10%‚ Group Work 20%‚ Final Exam70% Textbook： Statistics(3rd Edition)， Junping Jia，Xiaoqun He，Yongjin Jin，China Renmin University Press，2007 Reference： Statistics for Business and Economics(7th Edition) Anderson‚ D.R.‚ & Sweeney‚ D.J. & Williams‚ T.A. 1.Introduction Statistics is a core curriculum for students in finance and economics major‚ which is a science method that starts with data
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While Statistics can also be misused in many ways such as using not representative samples‚ small sample size‚ ambiguous averages and dispersions‚ detached facts‚ implied connections‚ wrong and misleading graphs‚ wrong use of statistical techniques‚ serious violation of assumption behind the statistical techniques and faculty surveys‚ we should also realize that Statistical literacy is not a skill that is widely accepted as necessary in education. Therefore a lot of misuse of statistics
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Descriptive Statistics Descriptive statistics is the analysis of data that summarize data in a way such that‚ meaningful patterns emerge from the data. Descriptive statistics do not allow us to reach to the conclusions beyond the data we have analyzed regarding any hypotheses we might have made. They simply describe our data. Measures of Central Tendency: these are ways of describing the central position of a frequency distribution for a group of data through: Mode: Sum of all observations divided
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