I Violating the Need for Successive Observations of the Dependent

question 120

Multiple Choice

i. Violating the need for successive observations of the dependent variable to be uncorrelated is called autocorrelation. ii. If an inverse relationship exists between the dependent variable and independent variables, the regression coefficients for the independent variables are negative.
iii. Given a multiple linear equation Y' = 5.1 + 2.2X₁ - 3.5X₂, assuming other things are held constant, an increase in one unit of the second independent variable will cause a -3.5 unit change in Y.

• A) (i), (ii), and (iii) are all correct statements.
• B) (i) and (ii) are correct statements but not (iii).
• C) (i) and (iii) are correct statements but not (ii).
• D) (ii) and (iii) are correct statements but not (i).
• E) (i), (ii), and (iii) are all false statements.

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Definitions:

Ratio Schedule

A pattern of delivering reinforcements only after a certain number of responses.

Number of Responses

In psychology, this refers to the total count of reactions or replies to a given stimulus or situation.

Conditioned Reinforcer

A stimulus that gains its reinforcing power through its association with a primary reinforcer and is used to modify behavior.

VR 20 Schedule

VR 20 Schedule, or Variable Ratio 20 Schedule, is a reinforcement schedule in which a response is rewarded after an unpredictable number of responses, on average every 20th response.