One caution with factorial designs is that
a. they present more validity threats than most designs.
b. they permit investigation of fewer variables than other designs.
c. with more factors interactions are difficult to interpret.
d. they are not used in educational studies.
c
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Which of the following statements is not true of the decimal number system?
a. There are 9 symbols for the numbers in the system. b. The value of a digit is determined by its position in a numeral. c. Zero acts as a number and as a placeholder in the system. d. Ten is the base number.
Primary-grade tests can include all but which of the following?
A. Written questions B. Lines drawn between matching items C. Blanks in a sentence D. Circling a correct response
Which of the following is a virtual doorway to a collection of related resources on the web?
A) Bookmark B) InstaSite C) Forum D) Portal
To understand important concepts such as democracy and freedom, we must seek understanding within the context in which they are advocated. This means we
A. need to understand history. B. need to understand ideology. C. need to understand political economy. D. All these answers are correct.