Which one of the following is a discrete variable?
a. academic ability
b. number of books in a library
c. reaction time in milliseconds
d. temperature in degrees Celsius
e. distance in kilometers
Ans: b
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Which of the following symptoms are characteristic of children with chronic heart problems?
a. seizures, hyperactivity, and skeletal deficiency b. overweight, dry skin, and blue lips and finger nails c. exercise intolerance, poor physical growth, and squatting d. always hungry, pale skin, and withdrawal
According to research examining the benefits of home-school cooperation, which of the following are ways in which students benefit from parental involvement in their children's schooling?
1 . Higher academic achievement 2 . More positive attitudes toward school 3 . More acceptable student behavior 4 . Better attendance rates 5 . Greater willingness to do homework a. 1, 2, 3, 4, 5 b. 2, 3, 4, 5 c. 1, 2, 3, 4 d. 1, 3, 4, 5
A repeated-measures design will be useful when?
A. There are many subjects to study. B. The subjects are homogenous. C. There is a great effect in the independent variable. D. The participants vary greatly from one another.
Our attitudes
A. are unrelated to our interactions with the world in general. B. must be accepted. C. influence how we see ourselves. D. do not influence our relationships.