Define Ratio, Proportion & Variation | 10th Class Math Chapter 03 | eLearn K12

The Ratio is the quantitative relation between two amounts showing the number of times one value contains or is contained within the other.
And the proportion is a part, share, or number considered in comparative relation to a whole.
While the variance is the fact or quality of being different, divergent, or inconsistent.
In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its mean. Informally, it measures how far a set of numbers are spread out from their average value.

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