Casio ClassPad II fx-CP400+E User Manual

Chapter 7: Statistics Application 142
 When n is an odd number, using the median of the total population as the reference, the population
elements are divided into two groups: values less than the median and values greater than the median.
The median value is excluded. Q
1
and Q
3
then become the values described below.
Q
1
= {median of the group of (n − 1)/2 items from the bottom of the population}
Q
3
= {median of the group of (n − 1)/2 items from the top of the population}
Median = {center point of the total population}
 When
n = 1, Q
1
= Q
3
= Median = population center point.
(b) When Frequency includes decimal fraction values
The Q
1
, Q
3
and Median values for this calculation method are described below.
Q
1
= {value of element whose cumulative frequency ratio is greater than 1/4 and nearest to 1/4}
When the cumulative frequency ratio for some data value is exactly 0.25, Q
1
is the average of that data
value and the next data value.
Q
3
= {value of element whose cumulative frequency ratio is greater than 3/4 and nearest to 3/4}
When the cumulative frequency ratio for some data value is exactly 0.75, Q
3
is the average of that data
value and the next data value.
Median = {value of element whose cumulative frequency ratio is greater than 1/2 and nearest to 1/2}
When the cumulative frequency ratio for some data value is exactly 0.5, Median is the average of that data
value and the next data value.
The following shows an actual example of the above.
Data Value Frequency Cumulative Frequency Cumulative Frequency Ratio
1 0.1 0.1 0.1/1.0 = 0.1
2 0.1 0.2 0.2/1.0 = 0.2
3 0.2 0.4 0.4/1.0 = 0.4
4 0.3 0.7 0.7/1.0 = 0.7
5 0.1 0.8 0.8/1.0 = 0.8
6 0.1 0.9 0.9/1.0 = 0.9
7 0.1 1.0 1.0/1.0 = 1.0
• 3 is the value whose cumulative frequency ratio is greater than 1/4 and nearest to 1/4, so Q
1
= 3.
• 5 is the value whose cumulative frequency ratio is greater than 3/4 and nearest to 3/4, so Q
3
= 5.
• 4 is the value whose cumulative frequency ratio is greater than 1/2 and nearest to 1/2, so Median = 4.
[Q
1
, Q
3
on Data] checked (default):
The Q
1
, Q
3
and Median values for this calculation method are described below.
Q
1
= {value of element whose cumulative frequency ratio is greater than or equal to 1/4 and nearest to 1/4}
Q
3
= {value of element whose cumulative frequency ratio is greater than or equal to 3/4 and nearest to 3/4}
The following shows an actual example of the above. (Number of Elements: 10)
Data Value Frequency Cumulative Frequency Cumulative Frequency Ratio
1 1 1 1/10 = 0.1
2 1 2 2/10 = 0.2
3 2 4 4/10 = 0.4
4 3 7 7/10 = 0.7
5 1 8 8/10 = 0.8
6 1 9 9/10 = 0.9
7 1 10 10/10 = 1.0

Casio ClassPad II fx-CP400+E Specifications

General

Model	fx-CP400+E
Category	Graphing Calculator
Display	Color LCD
Resolution	320 x 528 pixels
Color Depth	65536 colors
Backup Battery	CR2032
Connectivity	USB
Power	4 x AAA batteries
Software	ClassPad Manager
Display Size	4.8 inch
Languages	Multiple languages

Summary

Chapter 1: Basics

1-1 General Guide

Provides an overview of the ClassPad, application operations, input, data handling, and format settings.

1-3 Built-in Application Basic Operations

Explains basic information and operations common to all built-in applications.

1-4 Input

Details on using the keypad and the on-screen soft keyboard for data input.

1-7 Configuring Application Format Settings

Configures number format, angle units, and other settings for calculations and graphs.

1-8 When you keep having problems…

Troubleshooting steps for common issues like freezing or unexpected behavior.

Chapter 2: Main Application

2-1 Basic Calculations

Covers arithmetic operations, parentheses, and calculation priority sequences.

2-7 Using the Action Menu

Explains how to use transformation, expansion, and calculus functions via the Action menu.

2-9 Using the Main Application in Combination with Other Applications

Details on using other ClassPad applications with the Main application.

Chapter 3: Graph & Table Application

3-1 Storing Functions

Instructions on how to input and store functions in the Graph Editor window.

3-2 Using the Graph Window

Operations for the Graph window, including display settings, zooming, and panning.

3-3 Using Table & Graph

Covers generating number tables and summary tables from functions.

Chapter 4: Conics Application

4-1 Inputting an Equation

Steps to input conics equations using preset forms or manually.

4-2 Drawing a Conics Graph

Instructions on drawing parabolas, circles, ellipses, hyperbolas, and general conics.

Chapter 5: Differential Equation Graph Application

5-1 Graphing a Differential Equation

Explains how to graph first, second, and nth-order differential equations.

Chapter 6: Sequence Application

6-1 Recursive and Explicit Form of a Sequence

Covers working with explicit and recursive sequences.

Chapter 7: Statistics Application

7-1 Using Stat Editor

Covers creating and maintaining lists for statistical calculations and graphing.

7-3 Performing Basic Statistical Calculations

Details on calculating mean, standard deviation, quartiles, and median.

7-4 Performing Advanced Statistical Calculations

Covers performing tests, confidence intervals, and distribution calculations using wizards.

Chapter 8: Geometry Application

8-1 Drawing Figures

Instructions on drawing basic geometric figures like points, lines, circles, and polygons.

8-2 Editing Figures

Explains how to select, move, copy, and change properties of geometric figures.

8-3 Using the Measurement Box

Details on viewing, specifying, and constraining measurements of figures.

Chapter 9: Numeric Solver Application

Solving an Equation

How to use the Numeric Solver to find approximate solutions to equations.

Chapter 10: eActivity Application

10-1 Creating an eActivity

Basic steps for creating an eActivity, including inserting text, calculations, and data.

Chapter 11: Financial Application

11-1 Financial Application Basic Operations

Covers starting the application, navigating pages, and inputting values.

11-2 Performing Financial Calculations

Details on performing various financial calculations like interest, cash flow, and amortization.

11-3 Calculation Formulas

Provides the formulas used for various financial calculations.

Chapter 12: Program Application

12-1 Creating and Running Program

Step-by-step guide to creating, saving, and running programs.

12-2 Debugging a Program

Techniques for finding and fixing errors in programs.

12-3 User-defined Functions

How to create and use user-defined functions within the ClassPad.

Chapter 13: Spreadsheet Application

13-1 Inputting and Editing Cell Contents

Covers selecting cells, inputting data, formulas, and editing cell contents.

13-2 Graphing

Instructions on creating various types of graphs from spreadsheet data.

Chapter 14: 3D Graph Application

14-1 Inputting an Expression

Details on inputting expressions for 3D graphing using the editor.

14-2 Using the 3D Graph Window

Operations for the 3D Graph window, including view settings and rotation.

Chapter 15: Picture Plot Application

15-1 Using the Plot Function

Covers plotting points on images and overlaying graphs.

Chapter 16: Interactive Differential Calculus Application

16-1 Learning about Tangents Using the [Tangent] Tab

Demonstrates the concept of tangents and slopes using interactive graphs.

16-2 Deriving the Derivative Using the [Deriv] Tab

Explains how to derive and plot function derivatives using the DiffCalc tool.

Chapter 17: Physium Application

17-1 Periodic Table

Accesses and displays information from the built-in periodic table.

17-2 Fundamental Physical Constants

Provides access to fundamental physical constants and their details.

17-3 Precautions

Lists important precautions related to the Physium application's data.

Chapter 18: System Application

18-1 Managing Memory Usage

Information on managing ClassPad memory areas: Main, eActivity, and Storage.

18-2 Configuring System Settings

Guides on adjusting display, power, keyboard, and other system settings.

Chapter 19: Performing Data Communication

19-1 Data Communication Overview

Explains configuring communication parameters and connection modes.

19-2 Performing Data Communication between the ClassPad and a Personal Computer

Steps for transferring data between ClassPad and a computer via USB.

Appendix

Character Code Table

A table listing character codes for 2-byte and other characters.

System Variable Table

An alphabetic listing of system variables with descriptions and types.

Graph Types and Executable Functions

A reference for graph types and functions executable within applications.

Error and Warning Message Tables

Lists and explains various error and warning messages encountered.