The mean of all z-scores in a distribution is equal to
a. zero.
b. number in the distribution.
c. the sum of all squared scores.
d. the sum of all squared z-scores divided by N.
A
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The extent to which an assessment instrument measures what it was designed to measure is called ____________
a. validity b. reliability c. measurability
Family child care homes are more likely to be able to control safety than are elementary school sites and child care centers
a. True b. False Indicate whether the statement is true or false
The refrigerator should be maintained at a temperature of ____________________ degrees Fahrenheit
Fill in the blank(s) with correct word
According to the text, developing positive self-esteem may prove to be especially difficult for which broad category of students?
A. girls B. boys C. minorities D. rural students