Trident Help

Statistics

Draw a scatter plot

Plot paired data as dots so you can see whether a pattern is there.

Open in Trident

A scatter plot puts each (x, y) pair on a graph as a dot. It is the first thing to do before fitting a line or curve, because your eyes can spot a pattern, or an odd point, straight away.

The example uses x = 1 to 5 and y = 2, 4, 5, 4, 5.

Classic Graphing 84

Start on the main screen: Press 2nd then mode (QUIT) to get back to the home screen. Pressing clear on a menu also backs out of it.

  1. Type x into L1 and y into L2.

    stat11enter2enter3enter4enter5enter▶2enter4enter5enter4enter5enter

  2. Open STAT PLOTS with 2nd then y=, choose Plot1, and move left to On, then press enter. The type is already Scatter.

    2ndSTAT PLOTy=1◀enter

  3. Press zoom then 9 (ZoomStat) to fit the window to your data. The dots appear.

    zoom9

  4. To check the setup, open STAT PLOTS again. Plot1 now says On.

    2ndSTAT PLOTy=

You should seeFive dots appear on the graph screen, and the STAT PLOTS menu shows Plot1 turned On.

Classic Graphing 84 key reference · Classic Graphing 84 manual

Natural Color Graphing

Start on the main screen: Press MENU then 1 to open Run-Matrix, the main calculation screen. Press EXIT to back out of a bar or screen, and SHIFT then EXIT (QUIT) to return to the app start.

  1. Type x into List 1 and y into List 2.

    MENU21EXE2EXE3EXE4EXE5EXE▲▲▲▲▲▶2EXE4EXE5EXE4EXE5EXE

  2. Choose GRAPH (F1), then GPH1 (F1). The dots are drawn.

    F1F1

  3. Press EXIT to return, then SET (F6) to see the plot settings. The type is Scatter.

    EXITF6

You should seeGraph Type:Scatter XList:List1 YList:List2

Natural Color Graphing key reference · Natural Color Graphing manual

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