Chap_3 - Chapter 3 Describing Data Numerical Measures After...

This preview shows pages 1–8. Sign up to view the full content.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chapter 3 Describing Data: Numerical Measures After completing this chapter, you should be able to:  Compute and interpret the mean, median, and mode for a set of data  Compute the range, variance, and standard deviation and know what these values mean  Compute and explain the coefficient of variation  Use the empirical to describe the shape of data sets Chapter Goals Chapter Topics  Measures of Center and Location  Mean, median, mode  Other measures of Location  Weighted mean, percentiles, quartiles  Measures of Variation  Range, interquartile range, variance and standard deviation, coefficient of variation Summary Measures Center and Location Mean Median Mode Other Measures of Location Weighted Mean Describing Data Numerically Variation Variance Standard Deviation Coefficient of Variation Range Percentiles Interquartile Range Quartiles Measures of Center and Location Center and Location Mean Median Mode Weighted Mean N x n x x N i i n i i        1 1        i i i W i i i W w x w w x w X Overview Mean (Arithmetic Average)  The Mean is the arithmetic average of data values  Sample mean  Population mean n = Sample Size N = Population Size n x x x n x x n n i i         2 1 1 N x x x N x N N i i          2 1 1 Mean (Arithmetic Average)  The most common measure of central tendency  Mean = sum of values divided by the number of values  Affected by extreme values (outliers) (continued) 0...
View Full Document

This note was uploaded on 03/22/2012 for the course FINA 210 taught by Professor Dakroub during the Spring '12 term at American University in Cairo.

Page1 / 26

Chap_3 - Chapter 3 Describing Data Numerical Measures After...

This preview shows document pages 1 - 8. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online