A Researcher Has Numbered All 50 States from 1 to 50

question 16

Multiple Choice

A researcher has numbered all 50 states from 1 to 50 and has calculated a mean of 17.43 for the variable "state of birth."

• A)Since the variable is nominal,the mean makes no sense.
• B)Since the variable is ordinal,we should treat the value of the mean with great caution.
• C)The variable is interval-ratio and the mean is an appropriate and useful statistic in this case.
• D)Since this variable is discrete,the mean should not be computed.

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Definitions:

Stratifying

The process of dividing a population or sample into subgroups, known as strata, to ensure that research or analysis is more accurate and reflective of the whole.

Blocking

A design technique in experiments that groups units with similar characteristics together to isolate the variable of interest and reduce variation.

Side-effects

Secondary, often undesirable effects of a drug or medical treatment beyond the intended therapeutic effects.

Double Blind

An experimental design in which neither the participants nor the researchers conducting the test are aware of who is receiving a particular treatment, to prevent bias.