May 5, 2020 · The scatter plot that displays a strong, negative linear association is characterized by points clustered around a downward-sloping line. To identify such a plot, look for the one where …

*Shape, strength, direction (of association) = Key items we investigate in scatterplots. *Linear association = Scatter pattern with approximately “straight line” trend.

There is a fairly strong negative linear relationship between the city gas mileage and weight of the 57 cars. In general, cars that weigh more tend to have lower city gas mileage.

Don’t say “correlation” when you mean “association.” The word “correlation” should be reserved for measuring the strength and direction of the linear relationship between two quantitative variables.

Note in the plot above how a straight line comfortably fits through the data; hence there is a linear relationship. The scatter about the line is quite small, so there is a strong linear relationship.

Correlation is a measure of linear association: how nearly a scatterplot follows a straight line. Two variables are positively correlated if the scatterplot slopes upwards (r > 0); they are negatively …

Aug 28, 2024 · The scatterplot reveals a strong, negative, roughly linear association between the hours spent on a phone per day and the hours spent on a computer per day for the nine students in the class.