SITE-A teams: Lesson 25

A fisheries researcher compiled the following data on lengths of randomly selected 6-year-old white female crappies (in millimeters):

217 219 231 225 223 235 230 217 222 214 225 251 220 225 220 221 253 210 218

221 228 222 233 220 218 225 234 222 227 213 235 223 222 223 234 224 231 220

Use the CASIO fx7400G to draw a histogram for these data.

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.

Press (V-Window).

Set up the viewing window as follows:

Xmin:    200    Ymin:    - 4

max:    260     max:     20

s c l:    5        s c l:    2

Press

Press (GRPH)

Press (Green more key)

Press (SET )

Scroll down and set the parameters as follows:

StatGraph1

G-Type:        Hist         Press if necessary.

XList:             List1     Press if necessary.

Freq:             1           Press if necessary.

Press

Press (GRPH)

Press (GPH1)

Set the parameters as follows:

Set     Interval

Strt:    200

ptch:    5

The histogram will appear on the calculator screen.

Press (Trace)

Use the right cursor arrow to move the "cross hairs" to get the frequencies in each category. The follow are visible:

 x = 200 f=0 x = 205 f=0 x = 210 f=3 x = 215 f=5 x = 220 f=14 x = 225 f=6 x = 230 f=6 x = 235 f=2 x = 240 f=0 x = 245 f=0 x = 250 f=2 x = 255 f=0

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)