Find
the
mean
of
following
data
class
0-200 200 - 400 400-600 400-800
800 - 1000 1000 - 1200
9 , 35, 50, 61, 38, 32
Answers
Answer:
Mean = 660
Step-by-step explanation:
Class intervals Frequency (f) x x * f
0 - 200 9 100 900
200 - 400 35 300 10500
400 - 600 50 500 25000
600 - 800 61 700 42700
800 - 1000 38 900 34200
1000 - 1200 32 1100 35200
= 225 = 148500
Now, Mean of the frequency distribution is given by ;
MEAN = ∑x*f/ ∑f
⇒ 148500/225
= 660
Therefore, mean of the given data is 660.
∑ means 'sum of '
hope it helps you..