In a class, 30% of the students offered English, 20% offered Hindi and 10% offered both. If a student is selected at random, what is the probability that he. has offered English or Hindi ?
Find the range and mode of the data 17, 18, 28, 19, 16, 18, 17, 29, 18
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Find the standard deviation of {11, 7, 10,13, 9}
A table tennis player, lost 12 games out of 18 games played. Calculate the games won in terms of decimal.
A sequence a, ax, ax2, ......, axn, has odd number of terms. Then the median is
The mean of a distribution is 15 and the standard deviation is 5. What is the value of the coefficient variation?
If the standard deviation of a population is 3, what would be the population variance?
The variance of a set of data is 169. Then the standard deviation of the data is
If the standard deviation of a population is 10, what would be the population variance?
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