Casio fx-50F User Manual

E-45
y
σ
n
1
2
(S-VAR)
1
(VAR)
e
2
Obtains the population standard deviation
of the sample
y
-data.
y
σ
n
–1
1
2
(S-VAR)
1
(VAR)
e
3
Obtains the sample standard deviation of
the sample
y
-data.
y
σn–1
n – 1
=
Σ (y
i
– y)
2
y
σn
n
=
Σ (y
i
– y)
2
y
σn
n
=
Σ (y
i
– y)
2
Regression Coeffi cient and Estimated Value Commands for Non-
quadratic Regression (VAR Menu)
The calculation that is performed when one of these commands is performed depends on
the regression type that is currently selected. For details about each regression calculation
formula, see “Regression Coeffi cient and Estimated Value Calculation Formula Table” (page
47).
a
1
2
(S-VAR)
1
(VAR)
ee
1
Obtains constant term a of the regression formula.
b
1
2
(S-VAR)
1
(VAR)
ee
2
Obtains coeffi cient b of the regression formula.
r
1
2
(S-VAR)
1
(VAR)
ee
3
Obtains correlation coeffi cient r.
ˆ x
1
2
(S-VAR)
1
(VAR)
d
1
Taking the value input immediately before this command as the
y
-value, obtains the
estimated value of
x
based on the regression formula for the currently selected regression
calculation.
ˆ y
1
2
(S-VAR)
1
(VAR)
d
2
Taking the value input immediately before this command as the
x
-value, obtains the
estimated value of
y
based on the regression formula for the currently selected regression
calculation.
x
σ
n
–1
1
2
(S-VAR)
1
(VAR)
3
Obtains the sample standard deviation of
the sample
x
-data.
x
σn–1
n – 1
=
Σ(x
i
– o)
2
¯ y
1
2
(S-VAR)
1
(VAR)
e
1
Obtains the mean of the sample
y
-data.
p
Σy
i
n
=
p
Σy
i
n
=

Casio fx-50F Specifications

General

Brand	Casio
Model	fx-50F
Category	Calculator
Language	English

Summary

Getting Started

Resetting Calculator to Initial Defaults

Procedure to reset calculator settings and clear memory.

Safety Precautions

Battery Handling Precautions

Precautions for handling and replacing the calculator battery.

Calculation Modes and Setup

Selecting a Calculation Mode

How to choose from the six available calculation modes.

Calculator Setup Overview

How to configure calculator settings like angle units and display digits.

Specifying the Angle Unit

Specifying Display Digits

Inputting Calculation Expressions

Natural Input Method

How to enter mathematical expressions as they are written.

Scientific Functions with Parentheses

Using parentheses with scientific functions like sin, cos, etc.

Editing Calculations

Insert vs. Overwrite Mode

Editing and Deleting Key Operations

Correcting and deleting key operations within input.

Finding and Correcting Calculation Errors

How to locate and correct errors in calculations.

Basic Calculations

Arithmetic Calculations

Performing addition, subtraction, multiplication, and division.

Fraction Input and Display

Inputting and displaying fractions in different formats.

Percent Calculations

Percent Calculation Examples

Demonstrating various percentage calculations.

Calculation History and Replay

Accessing and Using Calculation History

Calculator Memory Operations

Answer Memory (Ans) Usage

How the calculator stores and uses the last result automatically.

Ans Memory Management and Consecutive Calculations

Manual Ans Insertion and Independent Memory

Manually using Ans and using independent memory (M) for cumulative totals.

Independent Memory Operations

Variable Operations

Trigonometric and Inverse Trigonometric Functions

Trig Function Input and Angle Unit Conversion

Hyperbolic and Exponential/Logarithmic Functions

Hyperbolic Function Input

Exponential and Logarithmic Functions

Exponential and Logarithmic Function Input

Complex Number Calculations (CMPLX)

Inputting Complex Numbers and Display Formats

How to input complex numbers and set display formats.

Rectangular Coordinate Complex Number Examples

Polar Format, Conjugate, Absolute Value, and Argument

Using polar format, conjugate, absolute value, and argument.

Statistical Calculations (SD/REG)

Inputting Statistical Data and Modes

Inputting sample data, understanding limits, and clearing data.

Single-variable Statistical Calculations

Viewing and Editing Statistical Data

Deleting Statistical Data Samples

Paired-variable Statistical Calculations (REG)

Selecting Regression Calculation Types

Choosing from various regression calculation types.

Inputting Paired Data Samples

Regression Coefficients for Non-quadratic Regression

Regression Coefficients for Quadratic Regression and Min/Max Commands

Base-n Calculations (BASE)

Specifying Number Base and Calculation Examples

Logical Operations on Binary Values

Program Mode (PRGM)

Program Mode Overview and Setup

Introduction to creating, running, and setting up programs.

Creating and Editing Programs

Steps for creating new programs and modifying existing ones.

Running and Deleting Programs

How to execute and remove programs from memory.

Program Command Reference

Detailed explanation of program commands.

Basic, Jump, and Conditional Commands

Explanation of basic, jump, and conditional program commands.

Program Control Structure Commands

Using If, For, and While control structures in programs.

Program Control and Setup Commands

Programmatic Commands for Units, Format, and Frequency

Programmatic Commands for Memory and Bases

Appendix

Error Message Reference

List of error messages, their causes, and actions.

Recovering from Error Messages

Power Requirements

Replacing the Calculator Battery

Instructions for replacing the calculator's button battery.