Question

choosing the right graph for two variables
identify the correct type of graph in the following scenario.
michelle collects data showing how the water levels in a local river change over time. she wants to see if there is a relationship between the water levels and the time of the year.
to visualize this data, she should use a
broken-line graph
scatter plot

Explanation:

Step1: Recall graph types

A scatter - plot is used to show the relationship between two variables. A broken - line graph (also known as a line graph) is used to show how a variable changes over time.

Step2: Analyze the data

Michelle wants to see the relationship between water levels (a variable) and time of the year (another variable). A scatter - plot is appropriate for showing the relationship between two variables. A broken - line graph is more about showing the change of a single variable over time in a sequential, connected way. Here, we are interested in the relationship between two variables (not just the change of water level over time in a connected, sequential sense for prediction etc. in the strictest broken - line graph use).

Answer:

scatter plot