Sharp EL-5230 User Manual

Page 64

Chapter 4: Statistical Calculations

The following statistics can be obtained for each statistical calculation (refer
to the table below):

• Use I key to perform a STAT variable calculation.

Single-variable statistical calculation

Statistics of 1 and value of the normal probability function

Linear regression calculation

Statistics of 1 and 2 (except coefficients c) and, in addition, estimate of y
for a given x

(estimate y´) and estimate of x

for a given y

(estimate x´)

Exponential regression, logarithmic regression, power
regression, and inverse regression calculation

Statistics of 1 and 2 (except coefficients c). In addition, estimate of y

for a

given x

(estimate y´) and estimate of x

for a given y (estimate x´). (Since the

calculator converts each formula into a linear regression formula before
actual calculation takes place, it obtains all statistics, except coefficients a
and b, from converted data rather than entered data.)

I 0 0

I 0 1

I 0 2

I 0 3

I 0 4

I 0 5

I 0 6

I 0 7

I 0 8

I 0 9

I 0 A

I 0 B

I 2 0

I 2 1

I 2 2

I 2 3

Number of samples

¯y

Mean of samples (y

data)

Sample standard deviation (y data)

Correlation coefficient

Coefficient of regression equation

Coefficient of quadratic regression equation

Population standard deviation ( y data)

¯x

Mean of samples (x

data)

Sample standard deviation (x data)

Population standard deviation ( x data)

Sum of samples (x

data)

Sum of squares of samples (x data)

Sum of samples ( y

data)

Sum of squares of samples ( y data)

x y

Sum of products of samples (x, y )

Variables

Contents

Key operations

This manual is related to the following products:

EL-5250