D Statistics
6. Find the value of p in each of the following frequency distributions.
Observation (x;)
5
(i)
15
25
35
20
16
p
2
Frequency (f;)
if the mean is 14.2.
1
7
5
Observation (x;)
8.
(ii)
6
LO
7
р
if the mean is 5.
Frequency (f;)
7. Prepare a frequency-distribution table for each of the following and calculate the mea
(i) 10, 8, 12, 10, 16, 12, 8, 10, 16, 8, 14, 12, 8, 10, 12, 14
(ii) 45, 75, 55, 45, 75, 75, 65, 45, 55, 45, 65, 75, 45, 65, 55
ANSWERS
2. (i) 2.5 (ii) 2 (iii) 6 (iv) 6 (v) 5.6
(:)
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