The correlation coefficient among two variables is zero

Assignment Help Basic Statistics

Reference no: EM1317442

Multiple choices based on the Correlation.

1. If the correlation coefficient between two variables equals zero, what can be said of the variables X and Y?
a. Not correlated
b. Dependent on each other
c. Highly correlated
d. All of the above are correct
e. None of the above is correct.

2. What can we say if the coefficient of determination is 0.94?
a. Strength of relationship is 0.94
b. Direction of relationship is positive
c.94% of total variation in one variable is explained by variation in the other variable
d.All of the above are correct
e. None of the above is correct.

3. What does the coefficient of determination equal if r = 0.89?
a. 0.94
b. 0.89
c. 0.79
d.0.06
e. None of the above

4. What does it mean if r = -1.00?
a. Dependent variable can be perfectly predicted by the independent variable.
b. All of the variation in the dependent variable can be accounted for by the independent variable.
c. High values of one variable are associated with low values of the other variable.
d. Coefficient of determination equals one.
e. All of the above are correct

Reference no: EM1317442

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