Question

Find the mean of the following distribution:

x

4

6

9

10

15

y

5

10

10

7

8

       

Answer 1

given data
x = 4 ,6,9,10,15,
y = 5,10,10,7,8

mean (x`) = £fixi/£fi
£fix = 20+60+90+70+120 = 290
£fi = 5+10+10+7+8 = 40

now,
mean = 290/40
mean = 29/4
mean = 7.25
hence, I mean for the above data is 7.25