Texas Instruments TI-Nspire CX User manual

TI-Inspire manual 1
Newest version
Older version
Real old version
This version works well but is not as
convenient entering letter

TI-Inspire manual 1
Instructions
Ti-Inspire for statistics
General Introduction

TI-Inspire manual 2

TI-Inspire manual 3
General Instructions
Press the On, Off button to go to Home page
Opens a page
for calculation.
This is different
from “scratch
pad” above in
that it can be
saved.
Open a page
for entering
data in the
form of a
spread sheet
Open a page
for plotting
and graphing
data.
Opens a page
for entering
document and
texts
Quick calculation page

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Use the middle button to navigate among the choices
To select an option press , in the middle button
Press [ Enter] (see below)

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Important If you try to divide numbers TI-Inspire will give you a fraction since a
decimal is only an approximation 1
1 Which I am more than happy to live with
Deleting
Highlight the item or column or number and hit “del”

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Finding Mean, Median and Mode
Step 1) Open list so you can enter yourdata
Press
Click the above icon
A new document opens with
Lists & Spreadsheet on the
page.

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Enter your data in a column (you could use any column)
But usually start with A
Give the column a name using the letter keys
Put name in top row
beside the letter
Put NOTHING in
this row for now.

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use the arrow to select
the page you want and
then hit “enter” to go to
that page

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Problem: Find the mean of the number of hours of TV watched by a sample of freshmen men
during their first week of college.
35, 28, 29, 31, 36, 26, 23, 34,19
Click [Menu]
Enter the Data in the column

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10
Give column a title if you wish otherwise it will be known by the letter above it.
Generally it is better to give each column a unique title so it can be found easily.
Use alphabet keys at the bottom of the calculator to do this
.
Press Menu
Hit
[Menu]

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Choose “4: Statistics”
The choose 1: Stat Calculations
Use arrow on navigator button to move left/ right or up/down

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Choose “1: One-Variable Statistics
Step 2) leave “num of lists” on "1" and
and then use Tab to get to [OK]
Leave “Num of
Lists” as 1

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and then use Tab to get to [OK]
= mean (pronounced “X bar”) Scroll
down for median and other data
This tells the TI where
the data is you want the
mean of. columns
Leave these three alone
Leave Frequency at 1 and
leave the others blank
This tell the calculator where
to put the answers. Choose a
column that does not already
have data in it because it will
override anything that is there
You can also press the
arrow at the end and it
will give you the names
of all thedata sets you
have at that time

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Clearing column and/ or rows of Data
First columns
Use
Go to
Click the above icon.

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use center navigator button to the data entry button which will cause it to highlight.
Click on the letter and this will cause the whole column to highlight of the top of the
column you want to clear
When column highlights
Column will empty
Several rows or several columns at the same time: Drag to select additional rows or
columns
Copying rows or columns
Use the same procedure as above to highlight the row or column. When it is highlighted
press [ctrl] C to copy a column or row and [ctrl] V to paste it.
Hold
down [ctrl]
and hit [del/clear]

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Constructing a Box plot
IMPORTANT: The column you want to turn into a box plot must have a name
Add a new number to you list of freshman tv watches. This one watches 56 hours a
week and probably will not be here the second semester.
On
Select Graph button to get a graph
screen

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This box will appear
Click here
Name of several file may
appear pick the one you
wish to do box plot on

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It looks this
[Menu]
Choose 1: Plot type
Choose 2 Box plot

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Move the arrow over part of the box or the outlier and it becomes a hand
the number that appears is the where the outliers start. In this case “36 “ is not an
outlier but anything greater is
Move the hand to the line in the middle o fhte box and it will give you the median. Inthis
case 30