Which of the following best describes the visual pattern of a linear relationship on a scatterplot?

A researcher plots data from a study examining the relationship between number of hours spent studying and self-reported test anxiety. The scatterplot shows that as study hours increase, anxiety scores steadily decrease, with the data points clustering closely around a straight downward-sloping line. This pattern represents a linear relationship.

A team of psychologists is analyzing different data sets to identify the nature of the associations between variables. Match each description of a research finding to the category that best describes its shape on a scatterplot.

A psychologist is evaluating the data from a research study to determine if the association between two quantitative variables ($X$ and $Y$) qualifies as a linear relationship. Arrange the following steps of this evaluative process in the correct logical order, from the initial visualization to the final determination of the model's fit.

You are tasked with designing a research protocol to investigate the association between 'exercise duration' ($X$) and 'resting heart rate' ($Y$). To specifically construct a model of a 'linear relationship', which of the following research hypotheses should you create?

A statistical association is only considered a 'linear relationship' if there is a positive correlation between the two quantitative variables ($X$ and $Y$).

Match each statistical term used in psychological research to the description that correctly identifies its characteristic pattern of change on a scatterplot.

A psychologist compares two sets of quantitative data. In the first set, the variables change at a constant rate, forming a straight path on a scatterplot. In the second set, the variables show a 'U-shaped' pattern. The psychologist identifies the first set as representing a(n) _____ relationship because its structural trend is best summarized by a single straight line rather than a curve.

An educational psychologist analyzes the correlation between the number of hours students spend studying ($X$) and their exam scores ($Y$). After plotting the quantitative data, they observe that the points on the scatterplot are reasonably well fit by a single straight line representing a positive correlation, rather than a curve. To determine the correct statistical model, the psychologist must analyze this visual pattern and recognize that this statistical association is classified as a _____ relationship.

A psychology undergraduate is evaluating a dataset examining the association between sleep duration and stress levels to determine if they share a linear relationship. Arrange the steps the student should take to evaluate and confirm this classification in the correct logical sequence.