Which of the following is the weakest, positive correlation coefficient? о -.05 о O.12 о -.55 .25
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- Which value of the coefficient of correlation r indicates a stronger correlation than -0.85? а. О.75 o b. -0.50 ос. 0.85 d. -0.90If the coefficient of correlation between two variables is -0.6, their coefficient of determination will be?A researcher calculates a correlation coefficient of -.38 for a sample of youths age 5 through 18 for the relationship between “age of the individual” and “number of crimes committed in the last 30 days.” The researcher then collects a sample of adults who are between the ages of 18 and 35 and calculates the correlation coefficient on the same two variables and concludes that the correlation coefficient is .42. Using these pieces of information, draw the relationship below.
- 9.If through a scatter diagram we can see a linear and negative association with a coefficient of determination (r ^ 2 = .89), then the correlation between the variables is: select one: a. -0.7921 b. 0.9434 c. -0.9434 d. 0.7921Suppose we record the husband’s age and the wife’s age for many randomly selected couples. What would it mean about ages of couples if these two variables had a negative relationship?What would it mean about ages of couples if these two variables had a positive relationship?Which do you think is more likely, a negative or a positive relationship?Do you expect a strong or a weak relationship in the data? Why?Would a strong correlation imply there is an association between husband age and wife age?If the coefficient of correlation between two variables is -0.6, What is the coefficient of non-determination?
