In Regression Analysis,the Total Variation in the Dependent Variable Y,measured $\sum \left( y _ { i } - \bar { y } \right) ^ { 2 }$

question 148

True/False

In regression analysis,the total variation in the dependent variable y,measured by $\sum \left( y _ { i } - \bar { y } \right) ^ { 2 }$ ,can be decomposed into two parts: the explained variation,measured by SSR,and the unexplained variation,measured by SSE.

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Definitions:

Test Statistic

A statistic calculated from sample data used to decide whether to reject the null hypothesis in a hypothesis test.

Population Average

Refers to the mean value of a characteristic within a given population.

Confidence Interval

An array of numerical outcomes, taken from sample analysis, believed to encase the estimated value of a population variable.

Population Means

The average value of a given characteristic within a specified population.