Which of the following describes standard deviation?

A. It is the most frequently used measure of variability.
B. It is the most frequently used measure of reliability.
C. It is not used with interval and ratio data.
D. It is the average distance of scores from the median.


Ans: A

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Good materials for self-smart intelligences include:

a. reference materials. b. recordings of nature sounds. c. a chalkboard. d. large-motor equipment.

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Which of the following represents a range that is closest to the true age of the universe?

A. 5–10 million years B. 50–100 million years C. 8–20 billion years D. 50–100 billion years

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Both ell in "bell" and op in "stop" are rimes

Indicate whether the statement is true or false.

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Without random assignment, research on influences such as divorce, home schooling, and so forth, often lack appropriate:

A) conceptual frameworks B) peer review C) control (or comparison) groups D) theoretical background

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