Question
The average of the first 10 numbers is 'x+20', the
average of the next 14 numbers is 'x', and the average of the remaining 16 numbers is 'x−30'. If the average of all the numbers is 75, find the value of 'x'.Solution
ATQ, 
Following two statements are related to regression coefficient
(I) Independent of the change of origin
(II) Independent of the change of scale
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Which one is not basis of classification of data.
For making frequency distribution, the number of classes used depends upon:
Which option is incorrect?
Which of the following is the most relevant for deriving a point estimate?
The incomes of the employees in a state is assumed to be normally distributed with mean ₹15,000 and variance ₹900. The median of the distribution o...
The mean deviation from an average A will be minimum, if A represents:
The coefficient of correlation is the _________ of coefficients of regression.
For ANOVA table
the F - statistics is:
Two data set of size 9 and 6 have standard deviation 3 and 4 respectively and arithmetic means 3 and 3 respectively. The standard deviation of combined...
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