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Determine the mean monthly salary of 50 employees of a company from the following frequency…

Determine the mean monthly salary of 50 employees of a company from the following frequency distribution.
(begin{array}{c|c} text{Monthly salary} & text{Frequency}\hline N200.00 & 10\ N325.00 & 5\N100.00 & 20\N120.00 & 2\ N60.00 & 10\ N80.00 & 3end{array})
  • A.
    N215.30
  • B.
    N134.10
  • C.
    N143.10
  • D.
    N80.00
  • E.
    N50.30
Correct Answer: Option B
Explanation

(bar{x}) = (frac{fx}{N})
= (frac{6705}{50})
= 1341
= N134.10