JAMB - Mathematics (2018 - No. 41)

 

The table above shows the frequency of children age x years in a hospital
x 1 2 3 4 5 6 7 8
y 3 4 5 6 7 6 5 4

How many children are in the hospital

36
40
44
50

Explanation

The total number of students is ∑ f = 3 + 4 + 5 + 6 + 7 + 6 + 5 + 4

  = 40

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