Texas Instruments TI-73 用户手册

     Chapter 7: Statistical Analyses

7307ENG.DOC   CH 7, Statistical Analyses, English   Julie Hewlett   Revised: 07/29/98 12:07 PM   Printed: 05/19/99

9:00 AM   Page 136 of 22

 

 and 

 variables are calculated and stored as

indicated below. To access these variables for use in

expressions, press - } 

 and select the

appropriate menu. If you edit a list or change the type of

analysis, all statistical variables are cleared.

Variables

Definition

VARS Menu

x

 or 

y

Mean of all 

 or 

 values.

G

 or 

G

Sum of all 

 values or 

 values.

G

G

 or 

G

Sum of all 

 values or 

values.

G

 or 

Sample standard deviation of

 or 

s

 or 

s

Population standard deviation

of 

 or 

Number of 

 or 

,

 data points.

Minimum of 

 values or 

values.

Maximum of 

 values or 

values.

G

Sum of 

¦

 for all 

 pairs in

two lists.

G

Median of the elements

between 

 and 

 (1st

quartile). Only calculated for

.

Median of all data points.

Median of the elements

between 

 and 

(3rd

quartile). Only calculated for

.