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 ?
If the standard deviation of 0, 1, 2, 3 ......... 9 is K, then the standard deviation of 10, 11, 12, 13 ........... 19 will be:
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The standard deviation of the set {10, 11, 12, 9, 8} is
Find the range of the data 2, 1, 2, 3, 5, 4, 7, 3, 5, 2, 4.
Find the median, mode and mean of 9, 5, 8, 9, 9, 7, 8, 9, 8.
In the usual set notation, A ∪ (B ∩ C) =
Find the range and mode of the data 17, 18, 28, 19, 16, 18, 17, 29, 18
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.
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