A Researcher Is Interested in Investigating 3 Types of Interventions

question 126

Multiple Choice

A researcher is interested in investigating 3 types of interventions designed to increase physical activity.The independent variable is the type of intervention and the dependent variable is amount of physical activity,measured in minutes per week.If this researcher wanted to use chi-square to analyze the data,what modification would need to be made?

• A)Formulas utilizing degrees of freedom need to be modified to N-3.
• B)Subtract .5 from each of the differences between the observed and expected values.
• C)At least double the amount of data should be collected.
• D)The dependent variable needs to be collapsed into categories.

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Definitions:

Depreciation Expense

Depreciation Expense denotes the allocation of an asset's cost over its useful life, reflecting the asset's consumption or decline in value.

Straight-line

A method of depreciation that allocates an equal expense amount to each period over the useful life of an asset.

Straight-line Depreciation

A method of allocating the cost of a tangible asset over its useful life, evenly distributing the depreciation expense each year.

Double Declining-balance

A method of accelerated depreciation where an asset’s value is reduced at double the rate of traditional straight-line depreciation.