Using the TI-83Plus for Statistics

Procedure

Using the calculator to find statistics on data:

Step by step:

• Press the "STAT" button.• With "EDIT" highlighted select "1:Edit" by pressing "ENTER". • If there is data in List 1 (L1) clear it by using the up arrow to highlight

"L1". Then press "CLEAR" and "ENTER".• Enter your data into List 1 (L1) by entering each value and pressing

"ENTER" after each value.• Press the buttons "2nd" and "MODE" (QUIT) to signify the end of the

data.• Press the "STAT" button.• Use the right arrow to highlight the "CALC" selection.• Choose "1:1-Var Stats" by pressing "ENTER".• Press "ENTER" again. • Use the down arrow to scroll the remaining statistics on the screen.

The mean uses the symbol x.• Press "CLEAR" to clear the screen.

Using the calculator to find the standard deviation:

Step by step:

• Press the "STAT" button.• With "EDIT" highlighted select "1:Edit" by pressing "ENTER". • If there is data in List 1 (L1) clear it by using the up arrow to highlight "L1".

Then press "CLEAR" and "ENTER".• Enter your data into List 1 (L1) by entering each value and pressing

"ENTER" after each value.• Press the buttons "2nd" and "MODE" (QUIT) to signify the end of the data.• Press the "STAT" button.• Use the right arrow to highlight the "CALC" selection.• Choose "1:1-Var Stats" by pressing "ENTER".• Press "ENTER" again. • Use the down arrow to scroll the remaining statistics on the screen. The

standard deviation uses the symbol sx for sample, x for population std.dev.• Press "CLEAR" to clear the screen.