Population Standard Deviation; Linear Regression - HP 35s User Manual

Population Standard Deviation

Population standard deviation is a measure of how dispersed the data values are
about the mean. Population standard deviation assumes the data constitutes the
complete set of data, and is calculated using n as a divisor.
 ÕÕ
Press
values.
 ÕÕÕ
Press
the y–values.
Example: Population Standard Deviation.
Grandma Hinkle has four grown sons with heights of 170, 173, 174, and 180 cm.
Find the population standard deviation of their heights.
Keys:
 
()



 ÕÕ

Linear Regression

Linear regression, L.R. (also called linear estimation) is a statistical method for
finding a straight line that best fits a set of x,y–data.
Note
( ) for the population standard deviation of the x–

       
( )


To avoid a   message, enter your data before
executing any of the functions in the L.R. menu.
( ) for the population standard deviation of
Display:
Clears the statistics registers.
Enters data. Four data points
accumulated.
Calculates the population
standard deviation.
Statistical Operations
Description:
12-7