Scatterplots

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Play to Learn

Goal(s): Gauge the strength of a correlation, based upon the scatterplot.

How: You will be shown two scatter plots at a time and asked to select the weaker correlation. Make 30 quick decisions, with immediate feedback.

Site: P2L.io

About

Before starting the game, become more familiar with scatterplots. Below are examples of scatterplots, arranged from strongest to weakest correlation. The strongest correlation is at the top.

The stronger the correlation, the closer the dots are to the best fitting line. The weaker the correlation, the more spread out the dots are, like a cloud of dots.

Shows a scatter plot with the points all falling along an imaginary line, going from the bottom left to the top right.

Perfect Positive Correlation. Pearson's r = +1.00

A scatter plot with 100+ data points, showing a correlation of -.96. When looking at the points, it would be easy to image drawing a line through their midst. The points would be fairly close around an imaginary line going through their midst.

Strong Negative Correlation, Pearson's r = -.96

A scatter plot with 100+ data points, showing a correlation of -.60. When looking at the points, you could image drawing a line through their midst, but there would be a lot of dots spread out on either side of it. The points appear like a cloud of dots with a lean to the left (as if we squished inward from the top right and bottom left).

Moderate Negative Correlation, Pearson's r = -.60

A scatter plot with 100+ data points, showing a correlation of +.18. When looking at the points, it would be hard to image drawing a line through their midst (but we still would). The points appear like a cloud of dots with a slight lean to the right (as if we slightly squished inward from the top left and bottom right).

Weak Positive Correlation, Pearson's r = +.18

A cloud of random dots on the scatter plot.

Zero correlation, Pearson's r = 0.00

Game

Resource/Options

Optional: Earning Class Credit

To earn credit for this activity:

Click the 'Accommodations' button on the game menu.
Using the number pad (in the Accommodation dialog box), type the passcode provided by your instructor.
Click the 'Continue' button. Doing so will return you back to the game menu.
Then click 'Start' to begin the game.
When you complete the task with a score of 85% or greater, you will be given a completion code. To view this completion code, click on the 'Completion Code' button.
To get credit for having completed the activity, provide the completion code as your answer (e.g., to a quiz question). If the completion code is not yet available (e.g., performance was less than 85%), then click the 'Continue' button to re-do the activity.

Accommodations include:

Screen Reader (click the 'Screen Reader' button)
Unlimited decision time (e.g., Click the 'Accommodations' button, then type #17 by itself or at the end of a passcode. Click 'Continue').

Please notify your instructor if requesting these accommodations.

Instructors can modify games and set up quizzes rather easily. Check out game modifications.

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