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Question

Question 71(i)
Age (in years) of 6 children of two groups are recorded as below:

Find the mode and range for each group.

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Solution

From the given table, age of children in group A = 7 yr, 7 yr, 9 yr, 8 yr, 10 yr, 10 yr
Age of children in group B = 7 yr, 9 yr, 11 yr, 12 yr, 12 yr, 12 yr
Mode in group A = 7 yr and 10 yr. [ 7 yr and 10 yr occurs most frequent, i.e. 2 times]
Range in group A = Maximum value - Minimum value = 10 - 7 = 3
Mode in group B = 12 yr [ 12 yr is the most frequent, i.e. 3]
Range in group B = Maximum value -Minimum value = 12 - 7 = 5

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