Transcript Stats_with_lists

Using the TI-83+
Calculations with Lists
Mean, median, etc.
 Once you have entered data in a list,
you may want to perform calculations
on that data.
 One quick way to get several
calculations at once can be found by
pressing the “STAT” key and then
pressing the right arrow to go to the
“CALC” heading.
1-Var Stats
 The first option in the “CALC” menu is “1Var Stats”. Press enter on this option.
 The calculator will write that command in
the home screen. It is waiting for you to
tell it which list to perform this task on.
 Press the 2nd key and the number of the
list you want (2nd and 1 will write L1, for
example). Press enter.
Here’s what you get (in order of
appearance)
 The mean.
 The sum of each number in the list.
 The sum of the square of each
number in the list (not used often).
 The standard deviation of the
numbers in the list.
 A different standard deviation
calculation (not used often).
Here’s what you get (in order of
appearance)






The
The
The
The
The
The
number of items in the list.
smallest number in the list.
value for the first quartile.
median number in the list.
value for the third quartile.
largest number in the list.
Don’t need all that?
 Press the 2nd button and the “STAT” key.
You should get a screen that says “NAMES”,
“OPS”, “MATH” at the top.
 Press the right cursor twice to get to the
“MATH” heading. In this menu are some of
the individual items in “1-Var Stats.”
 Select the item you want and press enter.
With each of these commands, you have to
press “2nd” and the list number, then close
off the parentheses and press enter again.
 DONE