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  4. How to Calculate Correlation With a TI 84 Calculator

How to Calculate Correlation With a TI 84 Calculator

By: Chance E. Gartneer
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The linear correlation coefficient works with data sets or lists and compares how those lists relate to each other on a scale from -1 to 1. A higher coefficient rating means the two variables have a stronger relationship, with the value of one indicating that the variables grow at a one-to-one rate. Use the TI-84 graphing calculator to calculate the linear correlation coefficient of two lists of data.

Happy Young Couple Calculating Invoice
credit: AndreyPopov/iStock/Getty Images

Step

Press the "2nd" key at the top of the keypad, and then press the "0" key. A list of functions appears on the calculator's screen.

Step

Scroll down the options on the screen with the down-arrow key on the joystick keypad in the top right corner. Stop scrolling when "DiaGnosticOn" is highlighted. Press the "Enter" key twice.

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Step

Press the "Stat" key and then press the "Enter" key. Empty columns with the headings "L1," "L2" and "L3" display on screen with the "L1" field highlighted.

Step

Enter the first value from the first list into the "L1" column by keying the value. Press the down-arrow key to advance to the next spot underneath. Move to the top of the second column using the up and right arrow keys. Enter the values of the second list the same way.

Step

Press the "Stat" key. Press the right-arrow key to move to the "Calc" heading.

Step

Scroll down to the "LinReg" option using and press the "Enter" key. The "r" variable displayed on the screen is the correlation coefficient.

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