Which of the following statements is true?
A) Measures of variability are numbers that describe the scatter of the data or the extent to which the data values are spread out.
B) The range is the most useful measure of variability.
C) The weighted mean is the most useful measure of variability.
D) All of the above
A
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In a period of falling prices, the lower cost of goods sold under the FIFO method leads to higher operating income and higher tax payments
Indicate whether this statement is true or false.
Cindy is an ethnographer who is trying to better understand how mothers take care of toddlers. Being a mother herself, she was able to join a mother's group and spent considerable time immersed within that culture. From this immersion, she is able to draw data from her observations. Cindy is referred to as a(n) ____
a. interloper b. participant-observer c. moderator d. mystery shopper