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Variance

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Variance
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homogeneous differential equation
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introduction to three dimensional geometry
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List of top Mathematics Questions on Variance

A random variable X has the following probability distribution:

X	-2	-1	0	1	2
P(X)	0.2	0.1	0.3	0.2	0.2

The variance of X will be:

The variance of the number obtained in a throw of an unbiased die is:

The variance of the following grouped data is: