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