Use the figure below to answer the following questions.
Figure 1A.2.3
-Refer to Figure 1A.2.3. If you were told that economic theory predicts that higher levels of the rate of interest (x) lead to lower levels of sales of houses (y) , which graph would you pick to represent this economic relationship?
Definitions:
Interaction Effect
In statistical modeling, the effect on the dependent variable that is a result of the combination of two or more independent variables.
F Statistic
A ratio used in statistical analysis to compare the variance between groups with the variance within groups, often applied in an ANOVA context.
Null Hypothesis
The presupposition in statistical testing that there is no relationship or effect between certain variables.
Interaction
In statistics, it refers to a situation where the effect of one variable on a response variable differs depending on the level of another variable.
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