Lessons / Activities : Lessons for Calculators : Casio TEAMS Grant Algebra Lessons

Lessons 24

Below are the percents of the popular vote won by the successful candidate
in each of the presidential elections from 1948 to 1988.

Year 1948 1952 1956 1960 1964 1968 1972 1976 1980 1984 1988
Percent 49.6 55.1 57.4 49.7 61.1 43.4 60.7 50.1 50.7 58.8 53.9

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.

Use your cursor arrows to highlight the STAT menu and press 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: 

     Xmin: 39     Ymin: -2.3
     max : 78     max :  2.3
     scl :  5     scl :  1

Press

Press   (GRPH) 

Press (Green more key)

Press (Set)

Scroll down and set the parameters as follows:

StatGraph1

G-Type:  Box    Press    if necessary.

XList :  List1  Press  if necessary.

Freq  :  1      Press  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 43.4. The first quartile value ( Q1 ) is 49.7. The median value (Med) is 53.9. The third quartile value ( Q3 ) is 58.8. The maximum value (Max) is 61.1.

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

Press

Turn off the CASIO FX7400G. Press (OFF)