QQuestionStatistics
QuestionStatistics
How can you find the range, variance, and standard deviation on a TI- 84 calculator?
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Answer
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Step 1:I'll provide a step-by-step guide for finding range, variance, and standard deviation on a TI- 84 calculator:
Step 2:: Enter Data
- Press STAT - Select 1:Edit - Enter your data values into the L^1 column - Press ENTER after each number
Step 3:: Calculate Range
- Press STAT - Arrow right to CALC - Select 1 -Var Stats - Ensure L^1 is highlighted - Press ENTER - Look for the range value (max - min) on the screen
Step 4:: Calculate Variance
- $$s^{2}$$ is for sample data
- In the same 1 -Var Stats screen
Step 5:: Calculate Standard Deviation
- Or $$s$$ (sample standard deviation)
- In 1 -Var Stats screen - These are the square roots of variance
Final Answer
- Range: Difference between maximum and minimum values - Variance: Measure of data spread - Standard Deviation: Square root of variance, indicating data dispersion Pro Tip: Always distinguish between population (\sigma) and sample (s) statistical measures.
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