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(1)

RECCMP II

USERS'

PROGRAH NO. 1110

PROGRAM TITLE: LEAST SQUARES POLlNOMIAL APPROXIHATION

PROGRAM NO. 2

PHOGRAH

CLASSIF'ICATION: General

AUTHOR:

PURPOSE:

DATE:

R. E. Chandos Autonetics

This program accept~ up to 760

X-Y

pairs and computes the mean of the

Y

values.

It also computes the coefficients in the zeroth, first, and second order polynomial approximations to the curve defined by the

X-Y

points.' In addition, for each of these POlynOMials, the standard deviation is computed.

10 August 1961

Published by

RECOMP

User's Library

at

AUTONETICS

INl1JSTRIAL

PHODUCTS

A DIVISION OF NORTH AMERICAN AVIATION,

INC.

3400 E. 70th Street, Long Beach

5,

Calif.

DISCLAIMER

Although tt Is assumed that all the precautions have been tllken to check out this program thoroughly, no responsibility is taken by the originator of this program for any erroneous results, misconceptions, or misrepresentaticns that may appear In this program. furthermore, no responsibility is ta~en by Autonetics Industrial Products for the correct reoroductlons of this program. No warranfy, e;l{press or Implied, is extended Dy the use or application 0 the program.

(2)

LEAST SQUARES POLYNOMIAL APPROXIMATION PROGRAM NO. 2 PAGE ONE

- - - - - - - - - - - - - - - - - - --

-

- _ ... -

-

-

- - .. - -

--

:This program accepts up to 760 X-Y pairs and computes· the mean of the

Y

values. It also computes the coefficients in the zeroth, first, and second order polynomial approximations to the curve defined by the

X-Y

points. In addition, for each of these polynomials, the standard deviation is computed.

Instructions for use:

·(1)

Enter the least squares

#2

tape.

(2)

Press "Start

1"0

The computer will print out

"N".

Type the number of

X-I

pairs that you ~11 enter as a three digit number, such as 021.

(3) You may now enter the

X-I

pairs as the computer asks~

for them. Order of entry is immate·rial. Entry i8

(6)

(8)

via the typewriter using any of the following formats:

85032

may be entered as (a)

.85.32

(carriage return)

(b)

+85.32

"(carriage return) (c)

+.8532+2

(carriage return) (d) +8.532+1 (carriage return) (e) ..

+8532-2

(carriage return)

(The carriage return may be replaced by a space or tab

if desired.) .

In case an error is made on type-in, correction may be . accomplished (before the carriage rerum is typed on·

ny") by pressing "error reset", then pressing "Start 2"

wi th !Jenae switch liB non. :

At the .conclusion of data entrYt "Ntl is entered again, this time as a number, as in (3) above, for example, "

21 (carriage "return). .

In case an error is discovered after all data has been entered, press "Start 2/1 with all sense switches

2!!.

Arter the computer types "Error?

fI,

you may type the number of the X-Y pair in· error. Type as a three digit rmmber, such as 012. Then enter the X and Y as they a:re asked for. Thie procedure may be repeated as many times as necessary to correct all errors."

After all corrections have· been made,· pres!J UStart

3".

Answers will be printed out and identified.

The program is self-restoring, and may be used repeatedly without re-entering the program tape.

(3)

LEAST SQUARES f'OLYNCMIAL APPROXIMATION PROGRAM NO.2 PAGE TWO

.. - - - -. - - - - - ... - - - - - -" - - - - - - -- -

~

.. - - - - - - - -

"

....

"

.. -

(9)

Timing·:

Approximately 1.27N

+

11.2

~econd.

excluding input/output.

(10)

The program occupies:

(0000 - 07007

t

7500 -

753i.j

1000 - 1177 1200 -

1437

Program 'AN-007.l

AN-014

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