When Would It Be Appropriate to Use the Planned Comparisons

question 11

Multiple Choice

When would it be appropriate to use the planned comparisons instead of the post hoc tests to identify differences in the time-trial groups?

• A) When specific hypotheses have been generated before the experiment.
• B) Comparisons should always be run with post hoc tests.
• C) Comparisons should be run in place of post hoc tests when no hypothesis has been planned prior to the experiment.
• D) Neither post hoc tests or comparisons are really necessary, as they only provide supplementary information.

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Definitions:

High-Low Method

A technique used in managerial accounting to estimate fixed and variable costs associated with production by analyzing the highest and lowest levels of activity.

Mixed Costs

Expenses that contain both fixed and variable components, changing in total with the level of activity but also containing a constant component.

Variable Cost

Variable costs are expenses that vary directly with the level of production or sales volume, such as materials and labor costs.

High-Low Data

A method used in various analyses that involves observing the highest and lowest data points to assess trends or calculate variables.