Question

Note: Attempt any 3 questions. All questions carry equal marks (25 marks each).
Q1: The CAT scores of 60 students are summarized below:
Class
40-50 50-60 60-70 70-80 80-90 90-100
Frequency 10
8
12
15
10
5
Calculate the sample mean, the sample variance and the standard deviation for the grouped data.​

Answer 1

Answer:

The answer for this question is I do no .

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