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Question

Consider the following frequency distribution table:

Observations Frequency Tally Marks
1 4 ||||
2 2 ||
3 6 |||| |
4 5 ||||
5 3 |||

Which of the following statements are true?

A

Total frequency = 15
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B

Total frequency = 20
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C

Average = 3
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D

Average = 4
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Solution

The correct options are
B
Total frequency = 20
C
Average = 3
We know,

Average=Sum of all observationsTotal number of observations

In this case,

Average=1+2+3+4+55=155=3

Also, total frequency = 4 +2+ 6 +5 +3 = 20

Hence, (b), (c) are the required answers

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