Transcription of Chapter 3 Descriptive Statistics: Numerical Measures
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11 SlideChapter 3 Descriptive statistics : Numerical Measures2 SlideLearning objectives1. Single variable Part I (Basic) How to calculate and use the Measures of How to calculate and use the Measures of variability2. Single variable Part II (Application) Understand what the Measures of location ( , mean,median, mode) tell us about distribution shape -Discuss its use in manipulating simulated How to detect outliers using z-score and empirical How to use Box plot to explore data How to calculate weighted mean How to calculate mean and variance for grouped data3.
2 Slide 3 L.O. 1. Numerical measures –Part I n Numerical measures n Measures of Location •Mean, median, mode, percentiles, quartiles n Measures of Variability •Range, interquartilerange, variance, standard deviation, coefficient of variation Slide 4 Numerical Measures If the measures are computed for data from a sample,
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