How the sample standard deviation is computed?
A. It is equal to the sample variance squared.
B. It is equal to the mean in a population.
C. It is the square root of the sample variance.
D. It is the sum of all scores divided by degrees of freedom
Ans: C
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Teachers who assign technology-based homework are NOT obligated to assist underserved students in finding alternative ways of accessing digital resources
A. TRUE B. FALSE
For a set of data with the number of groups = 3 and the total N = 500, the expected frequency (fe) for each group is equal to ______.
a. 165 b. 166.67 c. 250 d. 300
Assume you are using GRE scores and undergraduate grades to predict graduate GPA. If the correlation of GRE scores and undergraduate grades were .18 rather than .56, then GRE scores would be ____ for predicting graduate GPA
a. more useful c. less useful b. equally useful
A sample size of about 60 subjects per group suggests that the researcher is chasing a:
A) small effect B) medium effect C) large effect D) cannot be determined