X 1 X 2 ... X N N Example 1: sample of n = 8 employees’ ages 21, 33, 47, 51, 68, 29, 31, 44 4 Frequency 3 2 1 0 0 20 40 ages 60 80 100 Sample average age is 40.5 Chapter 4 Descriptive Statistics Page 3 Central Tendency Median- the value in the middle How does the median compare to the mean? What did the histogram look like? Example 1: of n = 8 employees’ ages (sorted) 21, 29, 31, 33, 44, 47, 51, 68 Median is the average of the two values in the middle. 4 Frequency…
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