While calculating the mean of a given data by the assumed-mean method, the following values were obtained.
While calculating the mean of a given data by the assumed-mean method, the following values were obtained.
A = 25, \(\sum{f_id_i}\) = 110, \(\sum{f_i}\) = 50
Find the mean.
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According to assumed-mean method,
\(\bar{x}\) = A + \(\cfrac{\sum_if_id_i}{\sum_if_i}\)
= 25 + \(\frac{110}{50}\)
= 25 + 2.2
= 27.2
Thus, mean is 27.2.
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