Which of the following is a correct interpretation of a correlation?
a. The correlation is .85 . This means students with lower verbal SAT scores tend to have lower GPAs as well..
b. The correlation between husbands' and wives' ages is .85, so the correlation between wives' and husbands' ages is +.85..
c. The correlation is .85 . This means that as the distance of a golf putt goes up, the success rate of making the putt goes down...
d. All of the above.
Q. 2Suppose the correlation between two measurement variables is 1 . Which of the following statements is not true?
a. As one of the variables increases, the other decreases.
b. The data looks the same as when two variables have a deterministic linear relationship.
c. The correlation between the variables is very weak.
d. All of the above statements are true.
Q. 3Which of the following describes a strong statistical correlation?
a. The value of one measurement variable is always equal to the square of the value of another measurement variable.
b. One measurement variable has a cause and effect relationship with another measurement variable.
c. Two measurement variables have a strong linear relationship.
d. All of the above.
Q. 4Determine whether or not the following statement could be statistically correct. If not, explain why not. The correlation between tree diameter and tree height in feet is .69 . In yards, this correlation would become .69/3 = .23..
Q. 5Determine whether or not the following statement could be statistically correct. If not, explain why not. The correlation between height and weight is +0.8, so the correlation between weight and height must be 0.8..
Q. 6Determine whether or not the following statement could be statistically correct. If not, explain why not. We found a strong correlation between gender and political party..
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