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JAMB Mathematics 2018 Paper

Question : 41

Total: 62

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

Solution:

Concept:

The total number of children is the sum of all frequencies in the table.

Explanation:

The frequency

y

gives the number of children at each age

x

Add all the

y

values together:

3 + 4 + 5 + 6 + 7 + 6 + 5 + 4

Adding step by step:

3 + 4 = 7

7 + 5 = 12

12 + 6 = 18

18 + 7 = 25

25 + 6 = 31

31 + 5 = 36

36 + 4 = 40

Therefore, the total sum of frequencies is

40

Answer:

40

children are in the hospital.

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