Question

find the mean of the following distribution 3-5 5-7 9-11 11 -13 , f = 5 , 10 ,10 , 7 , 8 ​

Answer 1

Step-by-step explanation:

f = 5,10,10,7,8

x = 4,6,8,10,12

xf = 20,60,80,70,84

f total = 40

xf total = 314

mean = xf total / f total = 314/40

mean = 7.85 ~ 8