types when the results cannot be reliable. According to Bluman (2005)‚ “statistics can be misrepresented in the following ways: Suspect Samples‚ Ambiguous Averages‚ Detached Statistics‚ Implied Connections‚ Misleading Graphs‚ Faulty Survey Questions‚ Asking Biased Questions‚ Using Confusing Words‚ Asking Doubled-Barreled Questions‚ and Using Double Negatives” (p.680-685). The following are example of misuses of statistics. 4. In many ads for weight loss products‚ under the product claims and
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and limitation of using official statistics to investigate social class differences in top comprehensive school. This essay will describe the strength and limitation of using an official statistic to investigate social class difference in top comprehensive school. The general aim of this research is to uncover proportion of working class or poor children with the use of free school meal in top comprehensive school and on GCSE. This research will use Official statistic which are secondary data(it been
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Literature and Bibliography See literature review and citation articles General introduction to research methodology * Bill Trochim’s nice Knowledge Base. This web-based text-book is a good place to start for quantitative research (including statistics) * Research Methods‚ by Christopher L. Heffner. This ten chapter research methods text is written for both undergraduate and graduate students in education‚ psychology‚ and the social sciences. It focuses on the basics of research design and
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types of measurement scales 2011 2 Page 1 Definition of Statistics Statistics is the science that studies the collection and interpretation of numerical data. Field of statistics is divided into Mathematical and Applied statistics. 2011 3 Applied statistics concerns the application of the methods of mathematical statistics to specific areas such as public health‚ economics etc Biostatistics is the branch of applied statistics that concerns the application of statistical methods to medical
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lose < 10 pound (µ < 10) Test Statistic used is Z test . Given that = 9‚ n= 50‚ = 2.8 Decision rule: Reject the null hypothesis‚ if the p value is less than the significance level 0.05. Details Z Test of Hypothesis for the Mean Data Null Hypothesis = 10 Level of Significance 0.05 Population Standard Deviation 2.8 Sample Size 50 Sample Mean 9 Intermediate Calculations Standard Error of the Mean 0.395979797 Z Test Statistic -2.525381361 Lower-Tail
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[Exploring Different Data Collection Methods] Exploring Different Data Collection Methods Abstract: Statistics is the science of gathering‚ analyzing‚ interpreting and presenting data. The objective of statistics is to exact information from data. Data are the observed values of a variable. There are many methods for collecting data and there are two main types of data‚ i.e. primary data and secondary data. In this paper‚ we are exploring different
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BUSINESS STATISTICS What is Business Statistics? Statistics in marketing‚ quality control and insurance Statistics is the most widely used quantitative method in business. It is concerned with extracting the best possible information from data in order to aid decision making. It is often applied to sales forecasting‚ quality control and market research. Data used in business include population censuses‚ opinion polls‚ consumer data bases‚ and sales and demand data. The role of the Statistician
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SciVerse ScienceDirect Physica A journal homepage: www.elsevier.com/locate/physa Conditional independence graph for nonlinear time series and its application to international financial markets Wei Gao a‚∗ ‚ Hongxia Zhao b a b School of Statistics‚ Xi’an University of Finance and Economics‚ Xi’an Shaanxi 710061‚ China School of College English‚ Xi’an University of Finance and Economics‚ Xi’an Shaanxi 710061‚ China article info abstract Conditional independence graphs are proposed
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Journal of Financial Economics 14 (1985) 3-31. USING North-Holland DAILY STOCK RETURNS The Case of Event Studies* Stephen J. BROWN Yale Universiry. New Haven‚ CT 06520‚ USA Jerold B. WARNER Universrty of Rochester‚ Rochester‚ NY 1462 7‚ USA Received November 1983‚ fmal version received August 1984 This paper examines properties of daily stock returns and how the particular characteristics of these data affect event study methodologies. Daily data generally present few difficulties for
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intended to have‚ and shall have‚ the same validity as my handwritten signature. Introduction to Statistics QNT 351 March 22‚ 2013 Merry Gallo Introduction to Statistics Statistics is defined in Statistics for Business and Economics‚ as the science of data. Involves collecting‚ classifying‚ organizing‚ analyzing‚ and interpreting numerical information. Statistics is more than just looking at numbers‚ there is a process involved in obtaining the numerical information
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