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TABLE 14-16
What are the factors that determine the acceleration time (in sec.)from 0 to 60 miles per hour of a car? Data on the following variables for 30 different vehicle models were collected:
Y (Accel Time): Acceleration time in sec.
X1 (Engine Size): c.c.
X2 (Sedan): 1 if the vehicle model is a sedan and 0 otherwise
The regression results using acceleration time as the dependent variable and the remaining variables as the independent variables are presented below. The various residual plots are as shown below.
The coefficient of partial determinations
and
are 0.3301,and 0.0594,respectively.
The coefficient of determination for the regression model using each of the 2 independent variables as the dependent variable and the other independent variable as independent variables ( )are,respectively 0.0077,and 0.0077.
-Referring to Table 14-16,________ of the variation in Accel Time can be explained by the two independent variables.
Potassium
A chemical element with symbol K, essential for various bodily functions including nerve transmission and muscle contraction.
Action Potential
A rapid, temporary change in the electrical membrane potential of a neuron or muscle cell, allowing the transmission of signals.
Relatively Refractory Period
A phase following the absolute refractory period during which a neuron requires a stronger than normal stimulus to fire an action potential.
Absolutely Refractory Period
A phase following action potential in neurons during which no new action potential can be initiated, regardless of the strength of the incoming signal.
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