For a set of data with the number of groups = 4 and the total N = 250, the degrees of freedom are equal to ______.
a. 3
b. 4
c. 249
d. 250
a. 3
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A study has been designed to investigate the effect of homogeneous grouping on the school performance and self-concept of elementary school children. In this study
a. homogeneous grouping and self-concept are the independent variables. b. homogeneous grouping and elementary school level are the independent variables. c. school performance and self-concept are the dependent variables. d. homogeneous grouping is the only independent variable and school performance is the only dependent variable.
Penny, a kindergartner, wants to learn how to draw a letter Q the way it appears in her coloring book. Penny's teacher watches her carefully and reinforces every attempt Penny makes to draw the letter Q correctly until the child actually draws the letter properly. This best demonstrates
a. shaping. b. negative reinforcement. c. classical conditioning. d. spontaneous recovery.
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If FA = 47.71 > 3.40, the researcher would ______.
a. reject H0 (p < .05) b. not reject H0 (p > .05) c. reject H0 (p < .01) d. not reject H0 (p < .05)