Question

Find the average for the following data.

VARIANT 0_10 | 10_20| 20_30| 30_40| 40_50 EDITION | 3 | 5 | 9 | 5 | 3 |​

Answer 1

Answer:

20-30

X           Y         Cf

0-10       3        3

10-20      5       8

(20-30)     9       17

30-40     5      22

40-50      3      25

          N=25

     

 X=25/5=7.5

X=20-30