Question

If the upper limit of the class is 20 and lower limit is 10 then the class interval will be ...​

Answer 1

for finding class interval uh have add upper limit and lower limit and divide it by 2 uh will get the class interval So,the class interval is 15

Answer 2

Class interval=mean
Mean-number1+number2/number of numbers
Mean=10+20/2=15
Ans=15
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