A survey was carried out to find the approximate number of hours that 20 people spent watching TV per week. The results are below:
10
19
25
7
29
14
21
28
13
11
15
15
22
9
23
12
29
17
8
29
From the table, calculate the following measure in respect of the number of hours spent watching TV.
The inter-quartile range
10
11
12.5
13
Okab 2021
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