A teacher measured the heights of children in her classroom and determined that the mean was 56 inches and the median was 54 inches. Which of the following statements is true?
a. Half the children were taller than 56 inches.
b. The average height of the children was 55 inches.
c. Half the children were taller than 54 inches.
d. The average height of the children was 54 inches.
ANSWER:
c
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"Inside knowledge" refers to things teachers learn from
A. conversations with colleagues. B. professional development sessions. C. conferences and books. D. consultants.
The standard deviation of a distribution is 35. If each score in the distribution is altered first by subtracting 10 points from each score and then by dividing each of these scores by 5, what is the standard deviation of this new distribution?
a. 35 b. 7 c. 35/25 =7/5 d. 0 e. It is impossible to determine the new standard deviation without more information.
Which of the following is an example of convenience sampling?
A. approaching shoppers at a mall to complete a survey B. interviewing child welfare workers on a break from a conference C. asking clients who are seeking services at your agency for depression to answer questions about treatment of depression D. all of the above E. none of the above