If Cov(x,y)= 1260, ,And ,Then the Coefficient of Determination

question 29

Multiple Choice

If cov(x,y) = 1260, ,and ,then the coefficient of determination is:

• A)0.90
• B)1.23
• C)0.81
• D)0.006

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Definitions:

Dependent Variable

The outcome factor that researchers measure in an experiment to see if it changes in response to manipulations of the independent variable.

Braking Speed

The rate at which a vehicle can decelerate and come to a complete stop, usually measured in meters per second squared (m/s²).

Internal Validity

Relates to the extent to which a study can establish a cause-and-effect relationship between its variables, free from external influence.

External Validity

How broadly a study's conclusions can be extended to various scenarios and populations.