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14. Statistics
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Q1 of 33 Page 14

If the mean of the following data is 20.6. Find the value of p.

Given: The mean of data is 20.6.


To find: The value of p.


Formula used:


Explanation:



Given,


Mean = 20.6


= 20.6


= 20.6


530 + 25p = 20.6 (50)


25p = 20.6 (50) – 530


p = = 20


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7 Find the median of the following data: 19, 25, 59, 48, 35, 31, 30, 32, 51. If 25 is replaced by 52 and 19 by 29, what will be the new median? 8 Find the value of p, if the mean of the following distribution is 20. 

x 15 17 19 20 + p 23
f 2 3 4 5p 6
2

Following are the lives in hours of 15 pieces of the components of aircraft engine. Find the median:

715, 724, 725, 710, 729, 745, 694, 699, 696, 712, 734, 728, 716, 705, 719

3

The shirt sizes worn by a group of 200 persons, who bought the shirt from a store, are as follows:


Find the modal shirt size worn by the group.

Questions · 33
14. Statistics
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