I an Index of 239

question 73

Multiple Choice

i. An index of 239.2 and an index of 86.4 are actually percents.
ii. The base period for one index might be 1982-84, while the base period for another index might
Be 1977.
iii. Most business and economic indexes are carried either to the nearest whole percent, such as
312 or 96, or to the nearest 10th of a percent, such as 97.5 and 178.6.

• 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:

Behavioral Contrast

A phenomenon where the rate of response to a stimulus changes when the conditions of reinforcement for another stimulus are altered.

Eyeblink Conditioning

When a conditioned stimulus (CS) becomes able to elicit a conditioned eyeblink as a result of being paired with a puff of air or a brief electrical shock below the eye.

Extinction Procedure

A process in conditioning where a conditioned response decreases in frequency and eventually disappears when the conditioned stimulus is presented without the unconditioned stimulus.

Conditioned Stimulus

A stimulus that was once neutral becomes capable of triggering a conditioned response after being paired with an unconditioned stimulus.