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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

 

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

A.

36

B.

40

C.

44

D.

50

Correct answer is B

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

  = 40



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