Question
In the following number-pairs, the second number is
obtained by applying certain mathematical operations to the first number. Select the set in which the numbers are related in the same way as are the numbers of the following sets. (NOTE: Operations should be performed on the whole numbers, without breaking down the numbers into its constituent digits. E.g. 13-Operations on 13 such as adding / subtracting/multiplying etc. to 13 can be performed. Breaking down 13 into 1 and 3 and then performing mathematical operations on 1 and 3 is not allowed) 7, 13Â 18, 35Solution
The correct answer is B
The memory-less property is followed by which of the following continuous distribution:
The square of normal variate with mean 0 and variance 1 follows:
For the random variable X with probability density function f(x) = (x−3)2 /5; x = 3, 4, 5, the variance of X is:
The variation among the observations of each specific class is known as:
If the first, second, and third moment about the origin are 2, 8, and 18 respectively, then third moment about mean is
For frequency distribution presentation , which option is wrong.
For a distribution, mean is 40, median is 40.5 and mode is 41. The distribution is:
From standard pack of 52 cards, 3 cards are drawn at random without replacement. The probability of drawing a king, a queen and a jack in order is
If mean and median of the distribution are 12 and 21, then the distribution
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