What is the standard deviation of the predictor variable?

Question:

What is the standard deviation of the predictor variable?

Standard deviation:

Standard deviation is defined as {eq}s=\sqrt{\frac{1}{n}\sum_{i=1}^{n}(x_i-\bar{x})^2} {/eq}

Sample standard deviation is defined as {eq}s=\sqrt{\frac{1}{n-1}\sum_{i=1}^{n}(x_i-\bar{x})^2} {/eq}

where {eq}\bar{x}=\frac{1}{n}\sum_{i=1}^{n}x_i {/eq}

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Suppose x is a predictor variable used for predicting the explanatory or response variable.

Then standard deviation of the predictor variable is...

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Predictor Variable: Definition & Example

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Chapter 9 / Lesson 15
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Did you know predictor variables are commonly used in nonexperimental research designs? Learn more about predictor variables from examples, and then test your knowledge with a quiz.


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