The extreme group method and the point biserial method are both used to estimate
a. reliability.
b. validity.
c. discriminability.
d. difficulty.
c
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There is a strong correlation between creativity and IQ.
Answer the following statement true (T) or false (F)
A repeated-measures study comparing two treatments with a sample of n = 4 participants produces MD = 3 with SS = 48 for the set of difference scores. What is the repeated-measures t statistic for these data?
a. 3/?3 = 1.73 c. 3/4 = 0.75 b. 3/2 = 1.50 d. 3/16 = 0.19
Children became more visible in the ____, fostering awareness of childhood as a special time of life.
A. Industrial Revolution B. Middle Ages C. twentieth century D. age of reason
A ___________ shows the same information as a frequency table in a graphical format
a. scattergram b. frequency distribution c. ungrouped frequency distribution d. rank-order distribution