Answer to Question #263821 in Economics for nysha

Question

find mean

items 0-5 5-10 10-15 15-20 20-25 25-30 30-35 35-40

f 2 5 7 13 21 16 8 3

Answer 1

items Mid value (x₁) Frequency (f1) f₁x₁

0-5 2.5 2 5

5-10 7.5 5 37.5

10-15 12.5 7 87.5

15-20 17.5 13 227.5

20-25 22.5 21 472.5

25-30 30 16 480

30-35 32.5 8 260

35-40 37.5 3 112.5

Sum = 75 Sum = 1682.5

Mean = 1682.5 / 75 = 22.4