22. Linear Associations

Question 1

A R of -.7 would be?

A. Weak correlation in the positive
B. Strong correlation in the positive
C. Moderate Correlation in the negative
D. Strong Correlation in the Negative
E. Very Strong Correlation in the Positive
F. Very Strong Correlation in the Negative

RFA

Answer 1

Ans. D .Strong Correlation in the Positive

easy stuff

less than .4 Weak

.4 to .6 Moderate

.6 to .8 Strong

Greater than .8 Very strong

If negative it is a negative correlation

Question 2

Monotone data that is heteroscedastic should use which type of correlation?

A. Fitzgerald
B. Pearson
C.Spearman
D. Newtonian

RFA

Answer 2

Ans. C Spearman is for heteroscedastic data ( V shaped) - safe

A. Fitzgerald - doesn’t exist

B. Pearson- for monotone linear oval shaped data-powerful

D. Newtonian- doesn’t exist