When Y Decreases by One Unit for Each Equal Unit

question 18

Multiple Choice

When Y decreases by one unit for each equal unit increase in X, then

• A) the intercept value will be negative
• B) the slope value will be negative
• C) the correlation value will be positive
• D) both a and b, but not c

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Definitions:

Crossover Design

A research method where participants receive more than one treatment in a specific order, allowing comparison of different interventions within the same group.

Dependent Variable

The outcome variable being measured in an experiment or study, which is hypothesized to depend on or be affected by the independent variable(s).

Treatment Effectiveness

The degree to which a treatment achieves its intended outcome(s) in a real-world (clinical or practical) setting.

Between-Groups Designs

Experimental designs where different groups of participants are exposed to various conditions or treatments, allowing for comparisons between group outcomes.