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Statistics Free Doubts and Solutions

CBSE - IX - Mathematics - Statistics

For what value of x will 8 and x have the same mean as 27 and 5? Elaborate step-by-step.

Asked by stutagra 11th February 2017, 3:46 PM
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CBSE - IX - Mathematics - Statistics

The average of 20 numbers is 0.of them,at most how many of them may be greater than zero?

Asked by pugalatha 23rd January 2015, 10:40 PM
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CBSE - IX - Mathematics - Statistics

Thank you very much, sir / madam

Asked by manojsun 18th March 2014, 12:48 PM
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CBSE - IX - Mathematics - Statistics

There are 50 numbers. each number is subracted from 53 and the mean of the numbers so obtained is found to be -3.5.   What is mean of the given number.

Asked by manojsun 17th March 2014, 9:47 AM
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CBSE - IX - Mathematics - Statistics

What is the meaning of xifi in statistics?

Asked by toshalimohapatra9ctis 16th March 2014, 11:41 AM
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CBSE - IX - Mathematics - Statistics

The class marks of a distribution are :

                 45,52,57,62,67,72,77,82,87,92,97,102.

Asked by 10th March 2014, 12:02 PM
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CBSE - IX - Mathematics - Statistics

The mean of 8 observations is 40.If 5 is added to each observation then find the value of new mean.

Asked by Chelsea Dhawan 7th March 2014, 6:54 PM
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CBSE - IX - Mathematics - Statistics

how can we determine weather we have to make a histrogram of uniform width or of varying widths ???
plz ans. me as soon as possible

Asked by deepanshu garg 6th March 2014, 3:58 PM
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