The Base Year for an Index Number Is

question 3

Multiple Choice

The base year for an index number is

• A)determined by the year the variable equals exactly 100.
• B)dependant upon the type of data.
• C)declared by the federal government.
• D)chosen arbitrarily by those who construct the data series.
• E)the year in which 2 or more index numbers are equal to 100.

Explain how confounding variables affect internal validity in experiments.

Describe the rationale behind random assignment in experiments.

Interpret correlation coefficients and their implications.

Understand naturalistic observation and its major advantage.

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