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ENTR 3P99 (5)
Chapter 8

Chapter 8

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Department
Entrepreneurship
Course
ENTR 3P99
Professor
Dirk De Clercq
Semester
Winter

Description
CHAPTER 8NORMAL DISTRIBUTION PROBABILITY AND STATISTICAL SIGNIFICANCEDistributions1 skewed distributions negatively skewed curve positively skewed curve bimodal distribution2 normal distribution or Guassian curveNORMAL DISTRIBUTIONGuassianCurveWe often possess data from many cases the plot of the distribution often has a bell shape This distribution is the normal distributionMany statistical tests require an approximately normal distribution of the data to work properly A histogram provides one method to examine the distributionEssential Characteristics of Normal Distribution distribution is bilaterally symmetrical and bell shaped the mean median and mode always coincide tails of the curve never quite reach the xaxis but extend out to infinity the range of the effective distribution is 6 standard deviation units the degree of peakedness is termed kurtosisNormal Distributionsymmetrical distribution around the meanWhy is knowledge about the normal distribution importantIf we knowThat the distribution of the scores for a variable is normalThe mean value of the scores for the variableand The standard deviation of those scores
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