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The mean value of the low spring tide water mark near Chennai is reckoned as the mean sea level in India. It serves as datum level i.e. the base or zero level from which the land elevations and sea depths are measured.
For a distribution with mean, median, mode and standard deviation 25, 24, 26 and 5 respectively, Karl Pearson's coefficient of skewness equals to:
For the frequency distribution of X number of grammatical mistakes per line is as follows.
X: 0 ...
The interquartile range excludes ___ of the values.
For a normal distribution, which of the following is true?
If the second and third moment about the origin are 8 and 18 and the third moment about mean is -14 , then the first moment about the origin is:
A Poisson distribution has a double mode at x = 1 and x = 2. The probability for x = 1 or for x = 2 of these two values is:
If the first quartile of data set 8,10,8,7,9 is 7.5, then the value of quartile deviation is
The following observations 14, 19, 17, 20, 25 constitute a random sample from an unknown population with mean u and standard deviation σ.
The...
Which option is incorrect?
