Calculate the mean of the following distribution using Assumed Mean Method:
2
Class Interval
Frequency
0-10
10-20
20-30
30-40
40-50
5
7
15
28
8
Answers
Answer:
25.23
Step-by-step explanation:
CLASS FREQUENCY(f) Midv(m) deviation(d) f×d
0-10 5 5 -20 -100
10-20 7 15 -10 -70
20-30 15 25 = A 0 0
30-40 28 35 10 280
40-50 8 45 20 160
f=63 f×d=270
so, A is our assumed mean i.e. 25
i hope you know the formula of assumed mean.
using that formula,
25+ 63/270
=25.23
Step-by-step explanation:
Answer:
ur ans is 25.23
Step-by-step explanation:
hope it helps