Saylor URL: http://www.saylor.org/books Saylor.org
Student name Height in inches Family income in dollars
Emily 67 64,000
Amy 68 67,000
Jonathan 68 51,000
Julian 68 48,000
Alissa 68 93,000
Christine 69 93,000
Candace 69 111,000
Xiaohua 69 56,000
Charlie 70 94,000
Timothy 71 73,000
Ariane 72 70,000
Logan 72 44,000
Figure 2.5 Height Distribution
The distribution of the heights of the students in a class will form a normal distribution. In this sample the mean (M)
= 67.12 and the standard deviation (s) = 2.74.