A student's test performance is sometimes indicated by a confidence interval rather than by a single score. The rationale behind this practice is that:
a. The computation of a single score is not possible for some tests.
b. A single test score is almost always subject to error.
c. Some tests have extremely vague scoring criteria.
d. Tests typically have low reliability.
B
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The American Medical Association has issued a statement about the negative effects of television on children's health
a. True b. False Indicate whether the statement is true or false
The establishment of the National Committee for Mental Hygiene marked the beginning of the mental health movement in America
Indicate whether this statement is true or false.
Most of the earliest special educators were trained as
A) ministers or priests. B) physicians. C) regular classroom teachers. D) social workers.
The value of r is the slope in which formula of the line of regression?
a. raw score formula b. deviation score formula c. z-score formula d. b) and c) e. All of the above