=+The Greek letter P is used to denote the population proportion of S’s.* We will see later how the value of p from a particular sample can be used to make inferences about p.

p 5 9

15 5 .60

*Note that we are using the symbol p to represent a population proportion and not as the mathematical constant p 5 3.14 Some statistics books use the symbol p for the population proportion and for the sample proportion.

p pˆ

Bold exercises answered in back ● Data set