Question

The accompanying frequency distribution represents the square footage of a random sample of 500 houses that are owner occupied year round. Approximate the mean and standard deviation square footage.

Square footage		Frequency
0−499​1,		9
500−999​1,		13
​1,000−​1,499		36
​1,500−​1,999		115
​2,000−​2,499		125
​2,500−​2,999		83
​3,000−​3,499		45
​3,500−​3,999		45
​4,000−​4,499		22
​4,500−​4,999		7

The mean square footage is

x overbarxequals=

​(Round to the nearest integer as​ needed.)

The standard deviation square footage is

sequals=

​(Round to one decimal place as​ needed.)

Answer 1