Frequencies 81136

In grouped data classes such as 10-15, 16-20, 21-25, 26-30 with the respective frequencies of each class as 3, 5, 4, 3, then the range (range of variation) is:
a. 15
b. 6
c. 20
d. 5

Correct answer:

r =  20

Step-by-step explanation:


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