The following questions are worth 1 point each. TRUE/FALSE 1. A negative relatio

Question

The following questions are worth 1 point each. TRUE/FALSE 1. A negative relationship between two variables X and Y indicates that large values of X are associated with large values of Y. 2. The sample covariance and correlation always have the same sign. 3. If two variables have been standardized, their covariance and correlation are equal. 4. The slope, beta_1, of the regression line indicates that you can expect Y to increase by the amount of beta_1 if the independent variable increases by one given that the assumptions behind the model are satisfied. 5. One of the key assumptions behind the use of simple linear regression is that all (X, Y) pairs lie on a straight line. 6. A shotgun pattern on a scatter diagram indicates there is no linear relationship between the two variables. 7. If the correlation coefficient, r, has a value of 1.0, this indicates a stronger linear relationship than if the value or r is -1.0. 8. The degree of significance that may be attached to a particular correlation coefficient (for example, r = 0.8) has no connection with the sample size. lf, in the regression model, beta is negative, we say there is ______ linear relationship between X and Y. A. An inverse B. A significant C. A direct D. No In regression and correlation analysis, the entity on which sets of measurements are is called the _____. A. Dependent variable B. Unit of association C. independent variable D. discrete variable

Explanation / Answer

1. False( for negative Corr if x increases y decrease and vice versa)

2 nd correct

3 Rd false

4. Correct

3. False

4.

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.