I am doing my homework for statistic course, and I've got some problems with a test.

A Hong Kong snack-food vendor offers 3 types of boxed “lunches to go,” priced at $3, $5,

and $10, respectively. The vendor would like to establish whether there is a relationship

between the price of the boxed lunch and the number of sales achieved per hour.

Consequently, over a 15-day period the vendor records the number of sales made for each

of the 3 types of boxed lunches. The following data show the boxed lunch price (x) and the

number sold (y) during each of the 15 lunch hours.

(3 , 7), (5 , 5), (10, 2), (3 , 9), (5 , 6), (10, 5), (3 , 6), (5 , 6), (10, 1), (3 , 10), (5 , 7), (10, 4), (3 , 5), (5 , 6), (10, 4)

a. Describe the data numerically with their covariance and correlation.

b. Discuss the relationship between the price and number of boxed lunches sold.

and $10, respectively. The vendor would like to establish whether there is a relationship

between the price of the boxed lunch and the number of sales achieved per hour.

Consequently, over a 15-day period the vendor records the number of sales made for each

of the 3 types of boxed lunches. The following data show the boxed lunch price (x) and the

number sold (y) during each of the 15 lunch hours.

(3 , 7), (5 , 5), (10, 2), (3 , 9), (5 , 6), (10, 5), (3 , 6), (5 , 6), (10, 1), (3 , 10), (5 , 7), (10, 4), (3 , 5), (5 , 6), (10, 4)

a. Describe the data numerically with their covariance and correlation.

b. Discuss the relationship between the price and number of boxed lunches sold.

Am I missing something?

Can you please help me solving this issue?

Thanks a lot,

Best regards