The Following Multiple Regression Output Was Generated from a Study

question 87

Multiple Choice

The following multiple regression output was generated from a study in which two independent variables are included. The first independent variable (X1) is a quantitative variable measured on a continuous scale. The second variable (X2) is qualitative coded 0 if Yes, 1 if No. Based on this information, which of the following statements is true?

• A) The model explains nearly 63 percent of the variation in the dependent variable
• B) If tested at the 0.05 significance level, the overall model would be considered statistically significant.
• C) The variable X1 has a slope coefficient that is significantly different from zero if tested at the 0.05 level of significance.
• D) All of the above are true.

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Definitions:

Sensory Input

Information gathered by the sensory organs that is then sent to the brain for processing.

Synapses

The junctions through which neurons signal to each other or to non-neuronal cells, allowing the transmission of electrical or chemical signals.

Gap Junctions

Specialized intercellular connections that allow for direct chemical and electrical communication between adjacent cells, facilitating the synchronization of cell activities.

Electrical Synapses

Specialized junctions through which cells of the nervous system signal to each other via direct flow of electric current.