Question

1. The marks obtained (out of 20) by 30 students of a class in a

test are as follows:

14, 16, 15, 11,15,14,13,16,8,10,7,11,18,15,14,19,20,7,10,13,12,

14,15,13, 16,17,14,11,10,20.​

Answer 1

Answer:

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Step-by-step explanation:

In this table class intervals are such that Lower limit is included and upper limit is not included in the class.

That means In interval (4−8), 4 is included but 8 is excluded.

And for frequency we counted how many times number from the interval occurs in given data.

 Class interval Frequency 4−8 2 8−12 7 12−16 13 16−20 6 20−24 2 Total  30

HOPE YOU GET IT MATE

Have a nice day ahead ☺️✌