Q. 10 C5.0( 5 Votes )

# The mean of frequ

Given: Mean = 8.1

∑fixi = 132 + 5k

∑fi = 20

To find k, we need to use the direct method formula of mean.

162 = 132 + 5k

5k = 162 – 132

5k = 30

k = 6

Thus, k = 6.

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