(I If Two Sets of Data Are in Different Units

question 60

Multiple Choice

(i. If two sets of data are in different units, we can compare the dispersion by using coefficient of
Variation.
(ii. A study is made of the commissions paid to furniture salespersons. If the standard deviation is
Computed, it would be measured in dollars squared.
(iii) The coefficient of variation is a measure of relative dispersion.

• 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:

Double-Blind Study

An experimental design in which neither the participants nor the researchers know who is receiving a particular treatment, to prevent bias.

Test-Retest Reliability

A measure of consistency where the same test is administered to the same group of people at two different points in time, and the scores are compared.

Experimenter Effects

Unintended changes in study participants’ behavior due to cues that the experimenter inadvertently conveys.

Representative Sample

A subset of a population that accurately reflects the members of the entire population.