Q. 34.7( 26 Votes )

# Calculate the mean for the following frequency distribution:

Answer :

To find the mean let us prepare frequency distribution table first .

Calculate the mid-point of each interval

And put it as x

Mid-point =

Average =

= = = 42.75

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If the mean of 8,12,21,42, x is 20, find the value of x.

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Calculate the mean for the following frequency distribution: