In a reanalysis of published studies, Twenge and Im (2007) found that for the ti
ID: 3329587 • Letter: I
Question
In a reanalysis of published studies, Twenge and Im (2007) found that for the time period of 1958 to 2001, the need for social approval of people in the United States was positively correlated with changes in the Dow Jones Industrial Average during that same period (the correlation coefficient was 0.10). This means that:
the need for social approval caused people to invest more money in the stock market.
the need for social approval prevented people from investing money in the stock market.
when the need for social approval was high, the Dow Jones was also high.
when the need for social approval was high, the Dow Jones was low.
Which of the following statements accurately captures a positive correlation?
an association such that participants with low scores on one variable tend to have high scores on the other variables as well, and those with high scores on one variable tend to have low scores on the other variable
one variable reliably predicts the scores on a second variable because they move perfectly together
an association such that participants with high scores on one variable tend to have high scores on the other variables as well, and those with low scores on one variable tend to have low scores on the other variable.
an association in which one variable is a multiplicative factor of the other variable.
Which of the following values of the correlation coefficient indicates the weakest relationship between two variables?
0.42
-0.30
-0.87
0.03
a.the need for social approval caused people to invest more money in the stock market.
b.the need for social approval prevented people from investing money in the stock market.
c.when the need for social approval was high, the Dow Jones was also high.
d.when the need for social approval was high, the Dow Jones was low.
Which of the following statements accurately captures a positive correlation?
a.an association such that participants with low scores on one variable tend to have high scores on the other variables as well, and those with high scores on one variable tend to have low scores on the other variable
b.one variable reliably predicts the scores on a second variable because they move perfectly together
c.an association such that participants with high scores on one variable tend to have high scores on the other variables as well, and those with low scores on one variable tend to have low scores on the other variable.
d.an association in which one variable is a multiplicative factor of the other variable.
Which of the following values of the correlation coefficient indicates the weakest relationship between two variables?
a.0.42
b.-0.30
c.-0.87
d.0.03
Explanation / Answer
1. Positive correlation means increase in one variable results the increase in other variable
Here it is given that the need for social approval of people in the United States was positively correlated with changes in the Dow Jones Industrial Average.
Which means answer is when the need for social approval was high, the Dow Jones was also high.
2. As mentioned in 1 increase in one variable results increase in other variable.
So answer is c. An association such that participants with high scores on one variable tend to have high scores on the other variables as well, and those with low scores on one variable tend to have low scores on the other variable.
3. For correlation coefficient sign is just to indicate the directions, based on that concept the weakest relationship between two variable is 0.03, hence answer is d.
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