Step-by-step explanation:
for mean. x. f. fx. CF
1. 70. 70. 70
2. 68. 136. 138
3. 70. 210. 208
4. 72. 288. 280
5. 72. 360. 352
6. 75. 450. 427
7. 74. 518. 501
8. 72. 576 573
N=573 EFX= 2068
NOW
FOR MEAN.
EFX ÷ N put it in -by
xbar 2068÷573. put in- by
xbar= 4•55
for median. n+1 ÷ 2thterm th at up and term down
m=573+1 ÷ 2th term th up
m. = 574 ÷2 th term th up
m= 287 th term th up
C.F GREATER THAN 287 IS 280
THEREFORE MEDIAN= 4
Mode= 72 because being most respected value
