Scatter Plots

1. Which of the following describes a positive correlation on a scatter plot? A) As one variable increases, the other variable decreases. B) As one variable increases, the other variable increases. C) The points on the graph are scattered randomly with no clear trend. D) The points on the graph form a horizontal line.

2. What does it mean when a scatter plot shows no correlation between two sets of data? A) There is a strong relationship between the two variables. B) There is a negative relationship between the two variables. C) There is no apparent relationship between the two variables. D) As one variable increases, the other variable always increases.

3. Which of the following pairs of variables would you expect to have a positive correlation? A) Height and test scores B) Hours of study and test scores C) Shoe size and test scores D) Number of siblings and test scores