What is the main purpose of inferential testing?
a) It can allow for a comparison of an observed statistic to a hypothesized population parameter.
b) It eliminates the possibility of making a Type I error when rejecting the null hypothesis.
c) It determines whether differences between two groups are meaningful.
d) It allows the researcher to determine the true population parameter.
a
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Which of the following pairs involving types of variables is not correct?
a. extraneous, outcome b. independent, cause c. attribute, subject difference d. dependent, effect
Mr. Cleveland wants to keep his students on their toes during his lectures by using frequent questioning. If Mr. Cleveland follows Jacob Kounin's research, he will
a. ask the question and ask for volunteers. b. ask the question and call on students in the back of the class first. c. ask the question and randomly choose a student to answer. d. call on a student and then ask the question.
Which of the following is true with regard to percentiles?
A) they are naturally distorted B) they are normal curve equivalents C) they can exceed 100 (rare) D) they are 50 (±1) half of the time
A study examines 25 of the 30 young children with disabilities in an specific intervention program. The results show that 90% of all participants have improved both cognitive and social functions. Based on the sample size, this study can be said to have ______ significance for this particular population.
A. quantitative B. statistical C. research D. clinical