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How do you find the correlation coefficient on a TI- 84 Plus calculator?
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Step 1:I'll provide a step-by-step guide to finding the correlation coefficient (r) on a TI- 84 Plus calculator:
Step 2:: Enter Data
- Press the STAT button - Select "1: Edit" - Enter your x-values in L^1 column - Enter corresponding y-values in L^2 column
Step 3:: Prepare Correlation Calculation
- Press STAT again - Arrow right to "CALC" - Select "4:LinReg(ax+b)"
Step 4:: Configure Calculation
- Make sure the input reads: $$LinReg(ax+b) L1, L2
- Press ENTER
Step 5:: Interpret Results
- This number will be between $$-1$$ and $$1
- The calculator will display several values
Step 6:: Understanding the r Value
- $$r = 0$$ indicates no linear correlation
- r = - 1 indicates perfect negative correlation
Final Answer
Follow these steps to find the correlation coefficient r on a TI- 84 Plus calculator, which measures the strength and direction of linear relationship between two variables.
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