Reference no: EM132392863

The United States National Association of Real Estate Sellers collected the following data from a sample of 130 sellers, representing their total annual commission income:

Income Frequency

$ 5,000 or less 5

$ 5,001-10,000 9

$ 10,001-15,000 11

$ 15,001-20,000 33

$ 20,001-30,000 37

$ 30,001-40,000 19

$ 40,001-50,000 9

More than 50,000 7

Build an ogive that helps you answer the following questions:

a) Approximately what proportion of sellers earns more than $ 25,000?

b) How much does the "average" seller of the sample earn?

c) What is the approximate income per year of a seller whose performance is close to 25% of the expected maximum annual income?