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Which of the following options is INCORRECT?
If moment generating function of continuous random variable X is (λ /λ−t) ;t < λ, then E(X3) equals to:
A physical instructor claims that the mean weight of students in school is greater than 82 kg with standard deviation 20. If a sample of size 81 studen...
For a random variable x, the central moments (µi) of all order exist. The square of (2j + 1)th  moment (µ22j+1) is
The grouped data for the observations are
Class:Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 1-3Â Â Â Â Â Â Â Â Â 3-5Â Â Â Â Â Â Â Â Â 5-7
For frequency distribution presentation , which option is wrong.
If Arithmetic mean and coefficient of variation of x are 10 and 40 respectively, then the variance of y = 10 – 2x 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...
If the first quartile of data set 8,10,8,7,9 is 7.5, then the value of quartile deviation is
For the two variables X and Y, the following observations are tabulated
X:Â Â Â Â Â Â Â Â Â Â Â 3Â Â Â Â Â Â Â Â Â Â Â Â Â 4Â Â Â Â Â Â Â Â Â...
