Scatter Plots and CorrelationReading a cloud of points, and the trap everyone falls into.8th GradeA scatter plot shows two variables at once, one point per subject.1LOOK FOR A DIRECTIONUp to the right is positive; down is negative; no pattern is none.2JUDGE THE STRENGTHTightly clustered is strong. Widely scattered is weak.3SPOT OUTLIERSPoints far from the rest. Ask why before removing them.4DRAW A LINE OF BEST FITRoughly equal numbers of points above and below.THE TRAPIce cream sales and drownings correlate strongly.Neither causes the other. Hot weather causes both.A correlation shows two things move together. It never shows that onemade the other happen.Scatter Plots and Correlationlearnposters.com
Scatter Plots and Correlation — printable math wall chart from LearnPosters. Free vector PDF, US Letter and A4.

Scatter Plots and Correlation, step by step

A scatter plot shows two variables at once, one point per subject.

  1. LOOK FOR A DIRECTIONUp to the right is positive; down is negative; no pattern is none.
  2. JUDGE THE STRENGTHTightly clustered is strong. Widely scattered is weak.
  3. SPOT OUTLIERSPoints far from the rest. Ask why before removing them.
  4. DRAW A LINE OF BEST FITRoughly equal numbers of points above and below.

the trap

  • Ice cream sales and drownings correlate strongly.
  • Neither causes the other. Hot weather causes both.

A correlation shows two things move together. It never shows that one made the other happen.

Questions about the Scatter Plots and Correlation poster

What’s on the Scatter Plots and Correlation poster?
4 numbered steps, with a full worked run-through. A scatter plot shows two variables at once, one point per subject. LOOK FOR A DIRECTION — Up to the right is positive; down is negative; no pattern is n…; JUDGE THE STRENGTH — Tightly clustered is strong. Widely scattered is weak.; SPOT OUTLIERS — Points far from the rest. Ask why before removing them.; DRAW A LINE OF BEST FIT — Roughly equal numbers of points above and below.. A correlation shows two things move together. It never shows that one made the other happen.
Who is the Scatter Plots and Correlation poster for?
Scatter Plots and Correlation is filed under 8th Grade (ages 13–14), so it matches what that year asks a child to remember. It is equally useful to an older student revisiting math, and to the parent or teacher answering the question at the kitchen table.
When should you use the Scatter Plots and Correlation poster?
Correlation is not causation. Say it out loud every time you read one. A wall chart earns its place by being glanceable from where the work is happening, so Scatter Plots and Correlation belongs on the wall where that math work actually happens, within glancing distance, rather than filed away.
What other posters go with Scatter Plots and Correlation?
Angles and Parallel Lines, Distance and Midpoint and Exponent & Radical Rules sit alongside Scatter Plots and Correlation in the 8th Grade set. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Angles and Parallel LinesDistance and MidpointExponent & Radical Rules
Is the Scatter Plots and Correlation poster free to download and print?
Yes. Scatter Plots and Correlation downloads as a free PDF with no account, no email and no watermark, like everything else in the 8th Grade set. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
What size does the Scatter Plots and Correlation poster print at?
Scatter Plots and Correlation is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Scatter Plots and Correlation loses nothing.Printing guide

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