highest income‚ the minimum being 4‚018.44 and the maximum being 995‚610.14. Statistics Household Income N Valid 70 Missing 0 Std. Deviation 291786.49129 Variance 85139356497.915 Standard deviation and variance: The average distance of the observations from the mean is 291786.49129 and the variance is simply the square of the standard deviation. This denotes that the household incomes are extremely dispersed from each other. Statistics Household Income N Valid 70
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Discovering Statistics Using SPSS by Mediasamenvattingen2011 The Marketplace to Buy and Sell your Study Material Buy and sell all your summaries‚ notes‚ theses‚ essays‚ papers‚ cases‚ manuals‚ researches‚ and many more.. www.stuvia.com Stuvia.com - The Marketplace to Buy and Sell your Study Material - Field: Discovering Statistics Using SPSS chapter 1‚ 2‚ 3‚ 6‚ 7‚ 8‚ 9‚ 10‚ 11‚ 17‚ 18 Field Chapter 1: Why is my evil lecturer forcing me
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Statistics Project MATH 2014 Prepared for: Sylvester Phagoo Prepared by: Denille Layne # 55937 Coursework Title: To determine if sleep or a lack of sleep can cause obesity among University students Introduction: The question in front of physicians now is “can sleep or the lack of sleep cause obesity?” recent research findings say yes‚ but is it true? They say that a lack of sleep makes you gain fat. Sleeping less can cause changes in complex metabolic pathways that control your
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Research_Indivitual ass ignament_42403693.sav Qnaire_no Value Standard Attributes Position Label Type Format Measurement Role Valid Values 1 2 3 4 5 6 7 8 1 Questionnaire No. Numeric F11 Nominal Input 1 1 1 1 1 1 1 1 12.5% 12.5% 12.5% 12.5% 12.5% 12.5% 12.5% 12.5% Count Percent Page 1 A1 Value Standard Attributes Position Label Type Format Measurement Role N Valid Missing Central Tendency and Dispersion Mean Standard Deviation Percentile 25 Percentile 50 Percentile 75 Labeled Values 1 2 3
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NCAA football coaches has a mean of $415‚953 and a standard deviation of $463‚364. Construct a 95% confidence interval estimate of the mean salary of an NCAA football coach. In a study designed to test the effectiveness of acupuncture for treating migraine‚ 142 subjects were treated with acupuncture and 80 subjects were given a sham treatment. The numbers of migraine attacks for the acupuncture treatment group had a mean of 1.8 and a standard deviation of 1.4. The numbers of migraine attacks for the
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What is central tendency? Explain three important measures of central tendency? • Measures of central tendency are scores that represent the center of the distribution. Three of the most common measures of central tendency are: – • Mean Median Mode – – The Mean The mean is the arithmetic average of the scores. – Mean is the average of the scores in a distribution _ X = _________ i N Σ Xi Mean Example Exam Scores 75 91 82 78 72 94 68 88
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1. Let X be the demand for the toy. Then X follows normal distribution with mean μ = 20000 and standard deviation σ. Then P(10000 < X < 30000) = 0.95 P( X < 20000)=0.5 P(10000 < X < 20000) = 0.475 P( X < 10000)=0.025 NORM.S.INV(0.025)=-1.96 NORM.S.INV(0.975)=1.96 Z-score of 10000 =-1.96 Z-score of 30000=1.96 σ = (30000-20000)/1.96 =10000/1.96 = 5102 Standard Deviation of 5102 The graph above shows the distribution for the demand for the Weather Teddy Bear using Specialty Toys’ forecasts based
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Grenoble Ecole de Management | Research Methodology Project | Correlation between social media and emotional stability | | Christian Morris Karla LukicXinyun MA | 2014/5/5 | Research Question Does social media has impact on the emotional stability of students? Hypotheses: H1: Females have the same ability to handle personal problems as males. H2: There is higher proportion of females that frequently use social media applications for personal reasons than males. H3: Frequency
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CHAPTER Statistical Quality Control Before studying this chapter you should know or‚ if necessary‚ review 1. 2. Quality as a competitive priority‚ Chapter 2‚ page 00. Total quality management (TQM) concepts‚ Chapter 5‚ pages 00 – 00. 6 LEARNING OBJECTIVES After studying this chapter you should be able to 1 2 3 4 5 6 7 8 9 Describe categories of statistical quality control (SQC). Explain the use of descriptive statistics in measuring quality characteristics. Identify and describe causes
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3.5‚ 4‚ 3.9‚ 4‚ 3‚ 4.5‚ 4.9‚ 3‚ 3.3‚ 3 Mode = 4 Females 4.2‚ 4.1‚ 4.2‚ 4.6‚ 3.9‚ 4.1‚ 4.7‚ 4.1‚ 4.2‚ 4‚ 4.2‚ 4.1‚ 4‚ 4.5‚ 4.3‚ 3.9‚ 4‚ 3.7 Mode = 4.1 & 4.2 Variability Xbar –x = 4.16 – 3.85 =0.31 Standard Deviation Males Mean Deviation Deviation Squared Females Mean Deviation Deviation Squared 4 3.85 0.15 0.0225 4.2 4.16 0.04 0.0016 4.6 3.85 0.75 0.5625 4.1 4.16 -0.06 0.0036 3.2 3.85 -0.65 0.4225 4.2 4.16 0.04 0.0016 3.9 3.85 0.05 0.0025 4.6 4.16 0.44 0.1936 4.2 3.85 0.35 0.1225
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