An Investigator Compared the Effectiveness of Two Methods of Instruction

question 84

Multiple Choice

An investigator compared the effectiveness of two methods of instruction (A and B) on the math achievement of boys and girls.The mean test scores are presented below.What interpretation of these results would be justified? Method
$\begin{array}{cc}&&&\text { Method }\\&&\mathrm{A} && \mathrm{B} \\\text { Gender }&\text { Boys }&40 && 30 \\&\text { Girls }&20 & &30\end{array}$

• A)There was a main effect for method of instruction.
• B)There was a main effect for gender.
• C)There was an interaction between gender and method of instruction.
• D)b and c
• E)All of the above are true.

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Definitions:

BLS

The Bureau of Labor Statistics, a US government agency responsible for collecting and analyzing critical economic data, including employment and inflation.

Natural Unemployment Rate

The lowest level of unemployment that an economy can sustain over the long term without causing inflation.

Frictional Unemployment

A type of unemployment that occurs when workers are between jobs, often due to searches for better positions or relocations.

Structural Unemployment

Unemployment caused by a mismatch between the skills or locations of job seekers and the requirements or locations of available jobs.