6-2-4

Calculating and Graphing Single-Variable Statistical Data

kDisplaying 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 below when you press 1(1VAR).

•Use c 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.

x¯ ..............

mean

Σx ............

sum

Σx2 ..........

sum of squares

xσn ..........

population standard deviation

xσn–1 ........

sample standard deviation

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

number of data items

minX ........

minimum

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

first quartile

Med..........

median

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

third quartile

maxX .......

maximum

Mod..........

mode

Mod : n ....number of data mode items

Mod : F ....data mode frequency

• Press 6(DRAW) to return to the original single-variable statistical graph.

#When Mod has multiple solutions, they are all displayed.

20070201