In examining the relationship between variables, the question “Should I portray the relationship between variables with a line or a curve?” pertains PRIMARILY to the ______ of the relationship.
a. direction
b. nature
c. strength
d. negativity
b. nature
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A group of academically advanced high school student leaders participated in an online discussion aimed at generating ideas to solve the water shortage problems in Africa. Which of the following patterns most likely characterized their discussion?
a. They focused on their own individual ideas and failed to see the value of others' ideas. b. They synthesized the ideas presented by others. c. They failed to see themselves as part of a community of problem solvers. d. They sought credit for the ideas generated by their group.
Homework is most valuable for
(a) acquiring new learning, (b) practicing existing learning, (c) tapping into caregivers' expertise, (d) securing community involvement.
A researcher is wishing to undertake a study of the relationship between a specific type of analgesia and levels of pain experienced by sufferers of rheumatoid arthritis. It is believed that level of physical activity will influence both of these variables and so it has been decided that the use of partial correlations will allow for this in the research. On which of the following should a correlation be performed?
A. Type of analgesia used and level of pain experienced, controlling for level of physical activity B. Level of pain experienced and level of physical activity, controlling for type of analgesia used C. Type of analgesia used and physical activity level, controlling for level of pain experienced D. None of the above
Which of the following is the best explanation for why the standard deviation is almost always reported with the mean?
A. The standard deviation measures the spread of scores from the mean, so it is important to know both the mean and the standard deviation. B. The standard deviation is also a measure of central tendency, so it is important to report this value with the mean. C. The mean and standard deviation estimate basically the same thing, so these values are typically reported together. D. This is not true; the standard deviation is rarely reported with the mean.