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The average working hours per month of the staff aged over 50 years in a factory were 160 and that of the staff aged under 50 years were 210. The mean ...
The mean deviation from an average A will be minimum, if A represents:
The grouped data for the observation are as follows.
Class : 2-4 4-6 6-8...
60% of the employees of a company are college graduates. Of these, 10% are in sales. Of the employees who did not graduate from college, 80% are in sal...
A random sample of size 225 is drawn from the population of mean μ and standard deviation σ. The sample mean follows the distribution with mean 100 a...
Which of the following satisfies the time and factor reversal test?
If first, second, and third moment about origin are 1, 6, and 15 respectively, then Karl Pearson beta coefficient of skewness β is
The Pearson's correlation coefficient between following observation
X: 1 2 �...
The mode (correct to two decimal places) for the given data is:
