Calculate the value of mode from the following data by grouping method –
Size 0 - 5 5 - 10 10 - 15 15 - 20 20 - 25 25 - 30 30 - 35
F 1 2 10 4 10 9 2
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answer=24.29
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size x f fn
0-5 3 1 3
5-10 8 2 16
10-15 13 10 130
15-20 18 4 72
20-25 23 10 230
25-30 28 9 252
30-35 33 2 66
TOTAL= 38 796
x= fn÷f
x= 796÷38
x= 20.23
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