The mean of the following is 6.8. Find the missing frequency ‘a’ [4]
x 5 6 7 8 9 10
f 4 a 6 4 2 1
plz ans fast
Answers
Answered by
1
Step-by-step explanation:
The mean of the following frequency distribution is 16, find the missing frequency
Class
0-4
4-8
8-12
12-16
16-20
20-24
24-28
28-32
32-36
Frequency
6
8
17
23
16
15
4
3
share
Share
Answer
Open in answr app
Open_in_app
Correct option is
A
8
Mean =16
Mean =
∑Frequency
∑(Mean)(Frequency)
16=
92+x
(12+48+170+322+288+330+120+10)
16x+1472=1392+26x
10x=80
x=8
Missing frequency is 8.
Answered by
0
Answer:
Step-by-step explanation:
Similar questions