BUSINESS STATISTICS Agenda Introduction Descriptive Statistics One–Tailed Test About a Population Mean t-Test Using Two Independent Samples t-Test For Paired Samples Analysis of Variance (ANOVA) Regression Analysis U.S. Patent and Trademark Office (PT0) Descriptive Statistics Frequency Vs Total Provisional Filings One–Tailed Test About a Population Mean Selected a small sample of 12 months’ provisional application filings for large US entities (for fiscal year 1996) 1. Determine the Hypotheses
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Importance of Statistics in Society (Lecturer: Statistics and Research Methodology) Nepal Commerce Campus Tribhuvan University Kathmandu‚ Nepal Email:drbhandari2012@gmail.com Statistics plays a vital role in every fields of human activity. Statistics has important role in determining the existing position of per capita income‚ unemployment‚ population growth rate‚ housing‚ schooling medical facilities etc…in a country. The statistical tools like Index number‚ correlation‚ time series analysis
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In today’s world‚ we are faced with situations everyday where Statistics can be applied. In general‚ Statistics is the science of collecting‚ organizing‚ and analyzing numerical data. The techniques involved in Statistics are important for the work of many professions‚ thus the proper preparation and theoretical background of Statistics is valuable for many successful career paths. Marketing campaigns‚ the realm of gambling‚ professional sports‚ the world of business and economics‚ the political
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Business Statistics Semester II 2008/2009 Chapter 1 Introduction of Business Statistics An important decision-making tool in business and is used in virtually every area of business. Among the more common meaning of the word are: 1) the science of gathering‚ analyzing‚ interpreting and presenting data 2) a branch of mathematics 3) a course of study 4) facts and figures 5) a death 6) sample measurement 7) type of distribution used to analyze data Statistics are broadly
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middle of a distribution of numbers‚ such that half the cases are higher and half lower than a value. What statistical measure should he use? A. mean B. median* C. mode D. standard deviation 3. A "codebook" is A. only used in existing statistics research. B. a document that tells the researcher where variables are located in the data file and what numbers go with variable attributes* C. the set of instructions that tell interviewers or experimenters how to treat respondents or subjects
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more per week have higher overall satisfaction in the service of the fitness center. Gender Analysis: Visit Levels & Exercise Programs To further analyze membership satisfaction‚ I wanted to break down the visit levels by gender and see if there was any correlation in exercise programs satisfaction. Gender | Average of Typical Visits Per Week | Average of Exercise Programs Satisfaction(5= Very Satisfied‚ 1=Very Unsatisfied) | Average of Months With the Club | Male | 2.10 | 2.55 | 37
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Encyclopedia’s definition for probability is the concern for events that are not certain and the reasonableness of one expectation over another. These expectations are usually based on some facts about past events or what is known as statistics. Collier describes statistics to be the science of the classification and manipulation of data in order to draw inferences. Inferences here can be read to mean expectations‚ leading to the conclusion that the two go hand in hand in accomplishing what mankind has
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There are three basic operational rules which help to simplify the use of the sigma notation. 1. For any integer N Operational Rules for Summation N i i N i i N i i i y x y x 1 1 1 2. If c is a constant‚ that is‚ does not depend on the index of summation i‚ then Continue... Nc c and x c cx N i N i i N i i 1 1 1 The graphical representation of data gives us the idea on the shape of the distribution
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Extra Exercise: Estimation and Hypothesis Testing 1. The length (in millimetres) of a batch of 9 screws was selected at random from a large consignment and found to have the following information. 8.02 8.00 8.01 8.01 7.99 8.00 7.99 8.03 8.01 Construct a 95% confidence interval to estimate the true average length of the screws for the whole consignment. From a second large consignment‚ another 16 screws are selected at random and their mean and standard deviation found to be
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sample is less than 95? 0.0091 Which of the following accurately describes a hypothesis test? An inferential technique that uses the data from a sample to draw inferences about a population. What is measured by the denominator of the z-score test statistic? The
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