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Q.

Organise the following marks in a class assessment, in a tabular form.

4, 6, 7, 5, 3, 5, 4, 5, 2, 6, 2, 5, 1, 9, 6, 5, 8, 4, 6, 7

(i) Which number is the highest?

(ii) Which number is the lowest?

(iii) What is the range of the data?

(iv) Find the arithmetic mean.                      

 

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Detailed Solution

Firstly, arrange the given marks in a tabular form:

MarksFrequency
11
22
31
43
55
64
72
81
91
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