Find the mean and mode of the following frequency distribution table : Marks 10-20 20-30 30-40 40-50 50-60 60-70 7O-80 frequency 3 5 10 12 8 7 5
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Answered by
1
Answer:
Step-by-step explanation:
Mean = ∑f x / ∑f
= (15*3 + 25*5 + 35*10) + 45*12 + 55*8 + 65*7 + 75*5) / (3+5+10+12+8+7+5)
= 2330/50
= 46.6.
The mode
= most frequent occurring mark
= 45.
Answered by
0
Answer:
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