Question

find the mean if the following distribution:-
X - 5, 10, 15, 20 , 25
F- 4, 12, 20, 28, 36
​

Answer 1

Answer:

19

Step-by-step explanation:

5*4+10*12+15*20+20*28+25*36=1900

now,

1900 divided by 100 as 100 is sum of frequencies so ans is 19

Answer 2

Answer:

mean= fixi/fi

fixi= 20+120+300+560+900=1900

fi= 4+12+20+28+36=100

mean= 1900/100

=19