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Question

The data on number of patients attending a hospital in a month are given below. Find the average number of patients attending the hospital in a day.
No. of patients01010202030304040505060
No. of days attending hospital 2 6 9 7 4 2

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Solution

No. of patients

0-10

10-20

20-30

30-40

40-50

50-60

No. of days attending hospital

2

6

9

7

4

2

Midpoints

5

15

25

35

45

55

Average number of patients per day=2(5)+6(15)+9(25)+7(35)+4(45)+2(55)30=10+90+225+245+180+11030=86030=29

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