Learning Objectives

Read pages 57-98 in your textbook.

After reading and studying this chapter, you should be able to do the following:

3.1 Describe and differentiate among the three common central tendency measures: (1) mode, (2) median, and (3) mean

3.2 Calculate mean from the formula

3.3 Adjust the mean formula when using frequency tables

3.4 Choose the correct formulas to calculate variance and standard deviation in populations or samples

3.5 Adjust the variance and standard deviation formulas when using frequency tables