Question

17 th one plsss......

Answer 1

Answer:

mean = 32.02

Explanation:

pocket money f class mark xi fxi

0 - 10 15 5 75

10 - 20 35 15 525

20 - 30 60 25 1500

30 - 40 85 35 2975

40 - 50 90 45 4050

∑f = 285 ∑ fxi = 9125

mean = ∑ fxi / ∑ f

=> 9125/285 = 32.02