Final answer:
In the context of this question, the correct option is a) Scatterplot, which is a graphical representation consisting of dots that each represent the values of two variables.
Step-by-step explanation:
A graphed cluster of dots where each dot represents the values of two variables is known as a scatterplot. Scatterplots are used to observe and show the relationship between two numerical variables. The pattern of the dots on the scatterplot can indicate the direction, form, and strength of the relationship between the two variables.
In contrast, a histogram is used to represent the distribution of a single numerical variable by showing the number of data points that fall within a range of values, known as bins. On the other hand, a bell curve, also known as a normal distribution curve, shows the distribution of data points in a way that most of the data points cluster around the mean, with fewer and fewer appearing as they move away from the mean. Lastly, a bar chart uses bars to show comparisons among discrete categories. Each bar's length or height can represent frequency, percentage, or another measure related to the category.
In the context of this question, the correct option is a) Scatterplot, which is a graphical representation consisting of dots that each represent the values of two variables.