The manager of a retail store counted the number of sales each hour during a 60-hour week. The frequency distribution is given below . Find the average number of sales during an hour

Question

Number of sales during hour
Number of occurrences
6 25
7 20
8 10
9 0
10 5

Answer 1

Number of sales during hour
6
7
8
9
10

Number of occurrences
25
20
10
0
5

Answer 2

total sales:
6*25+7*20+8*10+9*0+10*5 = 420

That's 420sales/60hr = 7 sales/hr

Answer 3

I figured it out!!! Thanks. It's 7.