# Statistic with grouped data for the HP-15C

This program is Copyright © 2002 by Raúl Lión Arrese and is used here by permission.

This program is supplied without representation or warranty of any kind. Raúl Lión Arrese and The Museum of HP Calculators therefore assume no responsibility and shall have no liability, consequential or otherwise, of any kind arising from the use of this program material or any part thereof.

## Overview

Entering Data with frequencies: the program let introduce the data with frequencies.

At the end, the standard functions can be used (mean, desv, summaries in R2 to R7, LR, etc)

How to use: CLEAR Σ and set USER before entering data.

One variable with freq: data x ENTER freq A → total data, and so on.

Two variable with freq: data y ENTER data x ENTER freq A → total data, and so on.

Lbls and regs used: LBL A, and reg I. (Also R2 to R7, as indicated in the back of the calculator)

### Example

Example: x y freq
6 4 3
7 3 16
8 3 20
9 2 10
10 1 1

At the end you must get mean x= 7.8, mean y= 2.82, sx=0.9035, sy=0.5602, RCL7=1078

## Program

LBL A
STO I
STO + 2
X⇔Y
ENTER
X^{2}
RCL × I
STO + 4
R↓
×
STO + 3
X⇔Y
×
STO + 7
LST X
ENTER
RCL × I
STO + 5
X⇔Y
X^{2}
RCL × I
STO + 6
RCL 2
RTN

Go back to the software library

Go back to the main exhibit hall