7. Find the mean of the following data: Class 0-10 10-20 20-30 30-40 40-50 Frequency 20 24 40 36 20
Answers
Answered by
6
Answer:
724
Step-by-step explanation:
x f m fm
0-10 20 5 100
10-20 24 15 360
20-30 40 25 1000
30-40 36 35 1260
40-50 20 45 900
N=5 Efm=3620
mean=Efm/N
= 3620/5
= 724
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