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Marks scored by some children in an arithmetic test are:5, 3, 6, 9, 4, 7,…

Marks scored by some children in an arithmetic test are:5, 3, 6, 9, 4, 7, 8, 6, 2, 7, 8, 4, 5, 2, 1, 0, 6, 9, 0, 8.
The arithmetic mean of the marks is

  • A.
    6
  • B.
    5
  • C.
    8
  • D.
    7
  • E.
    10
Correct Answer: Option B
Explanation

Add all the No.s together to give 100
(sum)xf = 100
N = 20
x = (frac{sum xf}{N})
= (frac{100}{20})
= 5