Download TI-83 Worksheet Number 22

TI-83 Worksheet Number 22
Statistics – Median, Mean, Standard Deviation, Box Plots
Following is a list of data which represents the cost per minute in cents for long distance
calls to a sample of countries served by Net2Phone.
7.9 17 3.9 9.9 15 9.9 7.9 7.9 7.9 49 7.9 8.9
9.9 7.9 16 49 21 6.9 11 9.9 9.9 7.9 3.9 22
Find the mean and standard deviation.
Key Strokes
Stat 1 Enter
60 Enter 61 Enter ...76 Enter
►
2 Enter 6 Enter…1 Enter
Stat ► 1 Enter
2nd L1 Enter
Comment
Brings up list menu
Enter Height data in list 1, L1
Move cursor to list 2, L2
Enter Count in L2
Selects One-Variable
Statistics from
CALC menu and puts command on the home
screen
Display
x  67.115 (mean)
S x  3.792
(standard deviation)
Find the 5-Number Summary for the Data, that is, find the Minimum, First Quartile,
Median, Third Quartile, and Maximum.
Key Strokes
▼▼▼▼▼
www.mikeshoreline.com 5/3/2017
Comment
Display:
Min X = 60
Q1=65
Med = 66.000
Q3=70.000
maxX=76.000
WS 22 Page 1 of 2
Make a Box Plot for the data with the outliers plotted separately.
Key Strokes
nd
Comment
2 Statplot 1
Select Plot 1
Enter
Turns Plot 1 on
▼ ► ► ► Enter
Highlight and select 4th icon. (The next icon is
a box plot withour the outlilers plotted
separately)
Makes L1 the XList
Displays boxplot
with trace on.
Med = 9.9
Move the right
and left arrows to
display the 5
number summary
values. No
outliers are shown on this plot because none of
the data satisfies the definition of an outlier.
▼ 2nd L1
Zoom 9:Trace ► ►
www.mikeshoreline.com 5/3/2017
WS 22 Page 2 of 2