Scatter Plots (Displaying Bivariate Data)

Data is information that is collected. Answers will vary.

I make a number line that shows the range of the data in my data set. Then I put a point above a number on the number line for each time that number appears in my data set.

Sarrie could plot either the distances OR the times on a line plot. She couldn't plot both on the same line plot.

No, all of the data displays I know only show one variable.

They may want to figure out if the data have a relationship, like if being further from school means they take longer to get to school.

It should be data where the information collected has two numeric values, such as height versus weight.

Pick one variable to be on the x-axis. The other variable goes on the y-axis. Write a coordinate pair for each piece of data. Then plot each data point.

In general, as the x-value increases, the y-value also increases.

In general, as the x-value increases, the y-value decreases.

I can draw a line that goes approximately through the middle of the data. To find the equation, I can use two points on the line to calculate the slope. I can also use a point and the slope, or look at the graph, to find the y-intercept. The equation is in the form y = mx + b.