Question

Find the value
of p in the
Tui
following
figure ?
Bo
<
hun
D​

Answer 1

Answer:

Step-by-step explanation:

x  

i

​  

f  

i

​  

=20,28,9p,77,39,30,20

Mean=  

∑f  

i

​  

 

∑x  

i

​  

f  

i

​  

 

​  

=  

p+21

214+9p

​  

=10

⇒9p+214=10p+210

⇒p=4.