The following chart shows the selling price ($000) of houses sold in the Billings, Montana, area.
a. How many homes were studied?
b. What is the class interval?
c. One hundred homes sold for less than what amount?
d. About 75% of the homes sold for less than what amount?
e. Estimate the number of homes in the $150,000 up to $200,000 class.
f. About how many homes sold for less than $225,000?