For the recorded observation, the coefficient of variation is 0.2 and the variance is 16. The arithmetic mean is:
If the random sample of size n is drawn without replacement from a finite population of size N, the correction factor for standard error of sample mean...
The sample sizes for two cases were 15 each with means as 104 and 114 respectively and variances as 200 and 510 respectively.
Let the null hyp...
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
If Arithmetic mean and coefficient of variation of x are 10 and 40 respectively, then the variance of y = 10 – 2x is:
The standard deviation of Y is double of standard deviation of X. The correlation coefficient between X and Y is 0.5. The acme angle between lines of r...
Which one is not basis of classification of data.
To estimate the average work experience of MBA students at a management institute, five students are selected at random from each type of background, s...
Completely Randomized Design provides maximum number of degree of freedom for the:
For the study purpose, the mean of the observations is 148 gm and standard deviation is 17.4 gm. Approximately, the coefficient of variation equals to:
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