Refer to Exhibit 10-10. A researcher conducted a semester-long experiment comparing two instructional programs in math. During the administration of tests during the semester, the researcher found that about ten percent of the experimental group and about five percent of the control group were absent for each administration
a. Regression
b. Diffusion
c. Mortality
d. Selection
e. History
C
You might also like to view...
Evidence relating to the extent to which test items accurately represent the variable of interest, such as whether the 40 items on the fifth-grade math test represent the content of fifth-grade mathematics, is called _____ validity evidence.
a. convergent b. discriminant c. content d. criterion
What kind of variable is IQ, measured by a standard IQ test?
a. Categorical. b. Discrete. c. Nominal. d. Continuous.
(p. 78-79) Which of the following is a disadvantage of large playgroups?
A. Noisy and outgoing children are ignored. B. They do not provide a mixture of ages. C. It is hard for children to get absorbed in play. D. Children do not receive enough stimulation.
A Type I error occurs
a. 95 to 99% of the time. b. when we fail to reject a false null. c. 1 - a of the time. d. when we do not discover a significant difference between the true and hypothesized parameters. e. when our sample outcome falls in the area of rejection by chance alone.