Sharp EL-9900 User Manual

1-variable (x) statistical a calculations

x

_

Mean of sample (x)

sx

Standard deviation of sample (x)

sx =

Σx

2

 

–

 nx

2

n 

–

 1

σx

Population standard deviation of sample (x)

σx =

Σx

2

 

–

 nx

2

n

Σx

Sum of sample (x)

Σx

2

Sum of squares of sample (x)

n

Sample number

xmin

Smallest value of sample (x)

Q1

First quartile of sample (x)

Med

Median of sample (x)

Q3

Third quartile of sample (x)

xmax

Largest value of sample (x)

2-variable (x, y) statistical calculations

The following values are added to the 1-variable statistic calcula-

tions

y

_

Mean of sample (y)

sy

Standard deviation of sample (y)

σy

Population standard deviation of sample (y)

Σy

Sum of sample (y)

Σy

2

Sum of squares of sample (y)

Σxy

Sum of product of sample (x, y)

ymin

Smallest value of sample (y)

ymax

Largest value of sample (y)