Which of the following samples would have the largest standard error of the mean?
a. 50 scores from a population with a standard deviation of 20
b. 50 scores from a population with a standard deviation of 40
c. 200 scores from a population with a standard deviation of 20
d. 200 scores from a population with a standard deviation of 40
Ans: B
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Which of the following equations is appropriate for a linear regression with three predictor variables?
A. Y ? = bX + a B. Y ? = b1X1 + b2X2 + a C. Y ? = b1X1 + b2X2 + b3X3 + a D. Y ? = b1X1 + b2X2 + b3X3 + b4X4
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If a test of intelligence renders differences in scores as a function of gender, what can be said about the test?
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