put into tech format, added step to clear existing data ←Older revision Revision as of 00:01, 4 September 2019 Line 1: Line 1: ...

Find Standard Deviation on the TI–84

By FaouZI September 03, 2019

put into tech format, added step to clear existing data

←Older revision Revision as of 00:01, 4 September 2019
Line 1: Line 1:
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Standard deviation is a measurement that determines, or quantifies the amount of variation of a set of data values, and is commonly calculated using statistics software or a calculator. On a TI-84 calculator, standard deviation can be found using the CALC menu.
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This wikiHow teaches you how to find the standard deviation for list of numbers on a TI-84 graphing calculator. After entering your data set, you can use the option to calculate various statistics, including the mean, sum, and both sample and population standard deviations in one step.
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[[Category:Probability and Statistics]]
  
[[Category:Probability and Statistics]]
 
[[Category:Graphing Calculators]]
  
[[Category:Graphing Calculators]]
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== Steps ==
  
== Steps ==
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#Press the “STAT” button, then select “1: '''Edit.”''' This menu allows you to enter each value in the data set. You will see columns, or lists labeled L1 through L6. The TI-84 allows you to enter up to six different lists of data sets.[[Image:Find Standard Deviation on the TI–84 Step 1 Version 2.jpg|center]]
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#Press the button on your calculator. It's in the third column of keys.
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#Type each value of the data set into the “L1” column and press “Enter” after each value. Your values will display in list format in column L1.[[Image:Find Standard Deviation on the TI–84 Step 2 Version 2.jpg|center]]
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# Select the menu and press . It's the first option on the menu. You will see columns (lists) labeled L1 through L6.[[Image:Find Standard Deviation on the TI–84 Step 1 Version 2.jpg|center]]
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#Press the “STAT” button again, then use the arrow key to highlight “CALC” at the top of your screen.[[Image:Find Standard Deviation on the TI–84 Step 3 Version 2.jpg|center]]
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#* The TI-84 allows you to enter up to six different lists of data sets.
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#Select “1: '''1-Var Stats” and press “Enter.”''' You must now select the list of values you entered in step #2.[[Image:Find Standard Deviation on the TI–84 Step 4 Version 2.jpg|center]]
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# Clear existing data from the lists. If there's already data in any of the columns, use these steps to remove it before you continue:
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#Press the “2nd” button, then press “1” to select the L1 column. If you created multiple lists and want to select a different list, press the number that corresponds with that column. For example, if you want standard deviation for the values you entered in the L4 column, press the “2nd” button, then press “4.”<ref>http://bas.utk.edu/stat-201-help/calculators/TI83sum.pdf</ref>[[Image:Find Standard Deviation on the TI–84 Step 5 Version 2.jpg|center]]
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#* Use the arrow keys to navigate to L1 (the first column).
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#Press “Enter.'''”''' The TI-84 will now display standard deviation calculations for the set of values.[[Image:Find Standard Deviation on the TI–84 Step 6 Version 2.jpg|center]]
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#* Press .
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#Find the standard deviation value next to either “Sx” or “sigma x,” the latter of which is located directly below “Sx.'''”''' Sx is the sample standard deviation, whereas sigma x is the population standard deviation.<ref>http://www.mathbootcamps.com/how-to-find-the-standard-deviation-and-variance-with-a-graphing-calculator-ti83-or-ti84/</ref>[[Image:Find Standard Deviation on the TI–84 Step 7 Version 2.jpg|center]]
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#* Press .
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#* Repeat for other lists with data.
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# Enter your data set into the L1 column. Press the key after each value. [[Image:Find Standard Deviation on the TI–84 Step 2 Version 2.jpg|center]]
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#Press the button to return to the menu.
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# Press the right-arrow to switch to the tab. It's the second menu tab at the top of the screen. [[Image:Find Standard Deviation on the TI–84 Step 3 Version 2.jpg|center]]  
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# Select and press . [[Image:Find Standard Deviation on the TI–84 Step 4 Version 2.jpg|center]]
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#Press the button and then to select L1. You'll only need to do this if you have a T1-84 Plus model and don't already see "L1" next to "List."[[Image:Find Standard Deviation on the TI–84 Step 5 Version 2.jpg|center]]
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#* If you created multiple lists and want to select a different one, press the number that corresponds with that column.<ref>https://ift.tt/2LoBC99> For example, if you want standard deviation for the values you entered in L4, press the and then .
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#* Some non-plus models may skip this screen and display your results automatically.<ref>https://www.youtube.com/watch?v=_WEbI1JHO4Q</ref>
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# Select and press . The TI-84 will now display standard deviation calculations for the set of values.[[Image:Find Standard Deviation on the TI–84 Step 6 Version 2.jpg|center]]
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# Find the standard deviation value next or . These should be the 4th and 5th results in the list. You may have to scroll down to view both values.<ref>https://ift.tt/2ZtPokx> [[Image:Find Standard Deviation on the TI–84 Step 7 Version 2.jpg|center]]  
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#* shows the standard deviation for the sample.
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#* shows the standard deviation for the population.
 
== References ==
  
== References ==
   


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