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Questions related from Dhritikesh Chakrabarty
Many academicians admit that statistics is a branch of political science. Some academicians want to say that statistics is a branch of economics while some academicians say that statistics is a...
11 November 2019 4,899 4 View
We have two variables X and Y following the linear model Y = a + bX where a & b are the parameters. We have collected the pairs of numerical observations...
11 November 2018 9,066 18 View
Suppose, we have the pairs of numerical observations namely (X1 , Y1) , (X2 , Y2) , (X3 , Y3) , ................... , (Xn , Yn) on the variables X and Y. Here the observations follow the...
11 November 2018 8,318 16 View
One of my research students (Ph.D. research) had submitted his Ph.D. thesis for the award of Ph.D. degree. One of the two thesis examiners / evaluators assigned by the university had strongly...
10 October 2018 4,734 16 View
I have two independent random samples . The distribution of data in each of the two samples may not be symmetric. Moreover, the asymmetry may not be same in the two data sets of the two...
09 September 2018 6,250 7 View
The coefficient of correlation r(X , Y) between two variables X and Y, due to Kearl Pearson defined by r(X , Y) = Covariance (X , Y)/{SD(X).SD(Y)} , measures the degree of linearity of...
09 September 2018 3,014 3 View
I have two independent random samples . The distribution of data in each of the two samples may not be normal (mesokurtic) . Moreover, the kurtosis may not be same in the two data sets of the two...
09 September 2018 3,004 8 View
Standard deviation, which is the most widely used measure of dispersion of data, is not based on the deviations of all pairs of values in the data set. A measure of dispersion based on the...
08 August 2018 5,406 0 View
Suppose there are 5 samples having different means (sample means). Statistical testing of hypothesis may lead to the result that the 5 sample means are equal. It is clear that the 5 sample means...
08 August 2018 8,513 6 View
The law of large number (as well as the theory of large sampling) implies that as the number of observations increases, the value of the estimator of a parameter based on the observations becomes...
08 August 2018 648 0 View
The regression equation of Y on X is of the form Y = a + b X where b is the regression coefficient coefficient of Y on X. Similarly, the regression equation of X on Y is of the...
08 August 2018 2,246 24 View
Due to some unavoidable reasons, some times some research papers have been published in journals which are of so called low quality. Does it mean that such papers are pour with respect to the quality?
07 July 2018 8,853 4 View
Suppose, the citation of a paper published in a journal is very less or the paper has no citation. This implies that the researchers in the respective area either have not known the paper...
07 July 2018 2,060 22 View
For publishing paper in journal, publishing fee/processing fee is charged by some journals. On the other hand, paper is published free of cost in some other journals. Why is it happens so? Is is...
07 July 2018 7,513 2 View
Research journals are found to carry impact factors. Now it is to be known abou (1) what does the impact factor mean?, (2) how is impact factor of a journal calculated? and (3) what...
07 July 2018 4,931 0 View
Learning is important for a teacher. Doing research is also important for teacher. Which one between learning and doing research can be regarded as more important for a teacher?
07 July 2018 2,807 34 View
