SITE-A teams: Lesson 22
An experiment was performed which measured the number of hours a certain brand of battery allowed a toy rabbit to operate. Twenty-four randomly selected batteries of that particular brand were tested. Below are the number of hours each battery lasted.
Hours 34 37 29 31 32 33 31 29 28 35 36 30 36 30 29 34 22 33 35 32 30 32 34 28
Use the
CASIO fx7400G to draw a boxplot for these data and give the five-number summary (Min, Q1, Median, Q3, Max) of the hours.Turn on the
CASIO fx7400G.
or just press 
when at the main menu screen.
Use your cursor arrows to
move to the first cell in List1 and enter the data given above. After entering a value
make sure to press to go down to the next cell.
Now we have to set the viewing window for our boxplot.
Press 
(V-Window).
Set up the viewing window as follows:
PressXmin: 19.5 Ymin: - 2.3
max: 39 max: 2.3
s c l: 2 s c l: 1
Press 
(GRPH)
Press 
(Green more key)
(SET )
Scroll down and set the parameters as follows:
StatGraph1G-Type: Box
Press 
if necessary.
XList:
List1
Press if necessary.
if necessary.
Press
Press (GRPH)
Press (GPH1)
The boxplot will appear on the calculator screen.
Press
(Trace)
Use the right cursor arrow to move the "cross hairs" to get the five number summary.
The minimum value (Min) is 22. The first quartile value ( Q1 ) is 29.5. The median value (Med) is 32. The third quartile value ( Q3 ) is 34. The maximum value (Max) is 37.
What other statistics are available?
Press (Trace)
This will terminate the trace and return you to the calculator screen having the 1VAR submenu on it.
Press (1VAR)
Scroll down to see the following summary statistics that have been calculated on the data:
1-Variable
Press 
Turn off the
CASIO fx7400G. Press
(OFF)