13. Which of the following is (are) TRUE? The independent variables should not be linear combinations of each other. The independent variables must not have significant correlations with each other. A. I only B. II only C. Both I and II D. Neither I nor II

13. Which of the following is (are) TRUE? The independent variables should not be linear combinations of each other. The independent variables must not have significant correlations with each other. A. I only B. II only C. Both I and II D. Neither I nor II

Algebra & Trigonometry with Analytic Geometry

13th Edition

ISBN:9781133382119

Author:Swokowski

Publisher:Swokowski

Chapter2: Equations And Inequalities

Section2.7: More On Inequalities

Problem 44E

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Question

13. Which of the following is (are) TRUE?

The independent variables should not be linear combinations of each other.
The independent variables must not have significant correlations with each other.

A. I only B. II only C. Both I and II D. Neither I nor II

14. Which of the following is (are) TRUE?

is the change in yield per unit change in stem girth.
gives the change in yield per for every additional internode holding internode length and stem girth constant.

A. I only B. II only C. Both I and II D. Neither I nor II

15. For the test to have sufficient error df , the researcher must consider the number of observations(n).For this test, how many observations(n) should be obtained in order to have an error df = 20?

A. 23 B. 24 C. 30 D. 32

For nos. 13 to 16. A sugarcane agronomist wants to express yield as a function of three plant traits, coded as
stem girth (x,), internode length( x,)
number of internodes( x,)
and
as independent
variables using multiple regression analysis likeļso: "=Po +B;Xy +B,Xy +B3Xy +E,,i = 12.n

Definition Definition Relationship between two independent variables. A correlation tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

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