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variances in math. Statistics - Calculating V. Thanks to all of you who support me on Patreon.
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A variable represents a concept or an item whose magnitude can be represented by a number ie. Variances add for the sum and for the difference of the random variables because the plus-or-minus terms dropped out along the way. The relationship between the two variables can be modeled by the equation y kx where k is a constant of proportionality.
The Standard Deviation is a measure of how spread out numbers are.
Practice calculating both sample and population variances. In this lesson learn why variables are not something to be afraid of or some concept that is impossible to grasp. So variation equations may have complicated expressions but theyll only ever have the one term. A measure of how spread out numbers are.
