Identify when it would be appropriate to use a parametric versus a nonparametric test
What will be an ideal response?
A parametric test should be used when certain parameter are known (m and s), the distribution is normal, and the data are interval or ratio. A nonparametric test does not require assumptions about the parameters of the population represented by the sample data (m and s are not needed), the underlying distribution is not normal, and the data are most often ordinal or nominal.
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ACT therapists believe that values
a. direct adaptive behavior. b. motivate first-order change. c. are a form of inaction. d. may constitute a presenting problem.
Given: For one section of the SAT: m = 500 and s = 100 . The SAT was given to a sample of n=35 and the mean SAT for this sample was 536 . Calculate the z test for this sample mean. Does this sample differ significantly from the population for a two-tailed test?
What will be an ideal response?
High schools have been able to improve their outcomes by
a. relying on a mentoring system using parents. b. sticking to proven standardized tests that are supplied with the curriculum materials to teachers. c. using challenging assignments that resemble work that students would do in a career or college. d. increasing their size from what would be considered a small school to a moderately sized school.
Which of the following is NOT an assumption of the one-way randomized ANOVA?
a. the data are interval or ratio b. the underlying distribution is skewed c. the variance among the populations being compared are homogeneous d. all of the alternative are correct.