1. The labeled potency of a tablet dosage form is 100mg. Ten

individual tablets are assayed according to a quality control

specification. The results are

101.6, 102.,99.6,104.7,103.8,104.6,100.5,106.3,100.7,105.2

Find the average dosage.

2. The mean weight of a patient in a group of six patients is 119.

The individual weights of five of them are 115, 109, 129,117

and 114. What is the weight of the sixth patient?

3. The following frequency distribution shows the number of days

of confinement of patients after delivery. Find the mean days

of confinement.

Days of 6 7 8 9 10

confinement

x

No.of 7 6 6 4 2

patients f

4. Compute the avg. marks of students using the following data:

Marks 0-10 10-20 20-30 30-40 40-50

No.of 3 19 32 17 4

students

5. The following table shows a distribution of children per family

of 191 families. Find the average number of children per family

by short cut method.

No. of 0 1 2 3 4 5 6 7 8

children

No of 25 16 36 48 30 16 15 3 2

families

www.DuloMix.com

6. The following table shows a frequency distribution of the ages of

patients examined on a particular day in the OPD of a hospital. Find the

average age of the patients by short cut method.

Age in years 0-10 10-20 20-30 30-40 40-50 50-60 60-70

No. of patients 23 57 138 277 105 74 21

7. Given below is the distribution of 140 candidates obtaining marks X or

higher in a certain examination.

X 10 20 30 40 50 60 70 80 90 100

Cum. Freq. 140 133 118 100 75 45 25 9 2 0

Calculate the mean of the marks obtained by short cut method.

8. Find the mean weight of 470 infants bon in a hospital, in one year, from

the following table:

Weight of 2.0 -2.4 2.5-2.9 3.0-3.4 3.5-3.9 4.0-4.4 4.5-4.9

infants (in Kg)

No of infants 17 97 187 135 28 6

9. Given below is distribution of 140 candidates obtaining marks X or

higher in a certain examination.

X 10 20 30 40 50 60 70 80 90 100

Cum. Freq. 140 133 118 100 75 45 25 9 2 0

10. Following table gives the cumulative frequency distribution of the ages

of 200 teachers. Find the mean of the distribution.

Age in years Cumulative Age in years Cumulative

frequency frequency

20-25 22 45-50 167

25-30 41 50-55 177

30-35 91 55-60 187

35-40 132 60-65 199

40-45 147 65-70 200