INormal Distribution Curve

The normal distribution curve is graphed using the normal distribution function.

XList specifies the list where the data is input, while Freq specifies the list where the data frequency is input. 1 is specified for Freq when frequency is not specified.

IBroken Line Graph

Lines connect center points of a histogram bar.

XList specifies the list where the data is input, while Freq specifies the list where the data frequency is input. 1 is specified for Freq when frequency is not specified.



U(DRAW)

The display screen appears as shown above before the graph is drawn. At this point, you can change the Start and Width values.

IDisplaying the Calculation Results of a Drawn Single-Variable Graph

Single-variable statistics can be expressed as both graphs and parameter values. When these graphs are displayed, the single-variable calculation results appear as shown to the right when you press (1VAR).

• Use A to scroll the list so you can view the items that run off the bottom of the screen.

The following describes the meaning of each of the parameters.

..................

mean

Q1 ................

first quartile

3

sum

Med ..............

median

x ................

 

 

3x2 ...............

sum of squares

Q3 ................

third quartile

Σx .................

population standard

maxX............

maximum

 

deviation

Mod ..............

mode

sx .................

sample standard

Mod:n ..........

number of data mode items

 

deviation

Mod:F

data mode frequency

n ..................

number of data items

 

 

minX.............

minimum

 

 

6-6