Sharp EL-9600 manual Linear Regressions, Steps for calculating the best-fitting line, Graph

Page 83

NAME _____________________________________________________ CLASS __________ DATE __________

8.1

LINEAR REGRESSIONS

Steps for calculating the best-fitting line

1.Turn the calculator on and press STAT to enter the statistics menu. Access the data entry screen by touching A EDIT and pressing ENTER . Delete old data and enter the following data set:

X Y 25 32 28 33 31 27 40 38 29 30

Check the data you have entered and correct any errors you may find.

2.

To find the best-fitting line (regression line) for the data, press

+ –

STAT

,

⋅ ⎟

touch D REG, double touch 02 Rg_ax+b, and press

ENTER

.

3.

To overlay the regression line and the scatter diagram for the data, you must

first set up the scatter diagram by pressing

, touching

2ndF

STAT PLOT

A PLOT1, pressing

ENTER

ENTER

▼

ENTER

▼

L1

▼

2ndF

, touching G S.D.,and

ENTER

2ndF

L2

ENTER

2ndF

STAT PLOT

touching 3 Scattr.

4.

Display the scatter diagram for the data by pressing

WINDOW

and setting

Xmin = 20, Xmax = 45, Xscl = 5, Ymin = 25, Ymax = 40, and Yscl = 5.

Press

GRAPH

to view the scatter diagram.

5. To view the overlay of the regression line and the scatter diagram, press Y= CL VARS , touch H STAT, press ENTER , touch B REGEQN, double touch 1 RegEqn, and press GRAPH .

Blackline Masters/STATISTICS USING THE SHARP EL-9600

79

Copyright © 1998, Sharp Electronics Corporation. Permission is granted to photocopy for educational use only.

Image 83

Contents Sharp E L 9 6 0 Statistics Ii Statistics Using the Sharp EL-9600 Contents Creation of a Page List StatEnter Method of Teaching For Discussion Chapter two 1Stats Method of Teaching Using Blackline Master Additional Problems Chapter three Enter Page Save this data set by pressing 2ndF For Discussion Chapter four Enter DEL Quit TraceStat Plot Enter Enter 2ndF Chapter five Touch a Edit List , touch To enter the statistics menu For Discussion Chapter six Page Page 2Stats. Press Page Find the numerical descriptions of the following data sets Chapter seven DEL Enter Source U.S. Environmental Protection Agency Math For DiscussionAdditional Problems Page Linear Regressions Linear Regressions/STATISTICS Using the Sharp EL-9600 Linear Regressions/STATISTICS Using the Sharp EL-9600 Method of Teaching Scattr Additional Problems Other Regressions Touch D REG, touch On the screen, double touch 10 Rgaebx, Method of Teaching Using Blackline Master Additional Problem Statistical Tests Statistical Tests/STATISTICS Using the Sharp EL-9600 Method of Teaching Using Blackline Master Statistical Tests/STATISTICS Using the Sharp EL-9600 For Discussion Contents Reproducible Blackline Masters Creation of a ONE-VARIABLE Data SET Steps for creating a non-weighted one-variable data setDouble touch 1 StoLD, press Steps for creating a weighted one-variable data setActivity 2 Creating a weighted one-variable data set Activity 1 Creating a non-weighted one-variable data setONE-VARIABLE Data SET Numerical Description of a ONE-VARIABLE Data SET Numerical Description of a ONE-VARIABLE Data SET Numerical Description of a ONE-VARIABLE Data SET To view the histogram, press Graph Steps for creating a non-weighted data sets histogramSteps for creating a weighted data sets histogram Activity 2 Creating a weighted data sets histogram Activity 1 Creating a non-weighted data sets histogramOther Graphical Portrayals of a Stat Plot ONE-VARIABLE Data SET Creation of a TWO-VARIABLE Data SET Steps for creating a non-weighted two-variable data setSteps for creating a weighted two-variable data set Activity 2 Creating a weighted two-variable data set Activity 1 Creating a non-weighted two-variable data setNumerical Description TWO-VARIABLE Data SET Quit Stat Numerical Description TWO-VARIABLE Data SET Zoom Graphical Portrayal TWO-VARIABLE Data SETGraphic Portryal of a TWO-VARIABLE Data SET Drawing a scatter diagram of a two-variable data setGraphical Portrayal TWO-VARIABLE Data SET Graphic Portrayal TWO-VARIABLE Data SET Access the data entry screen and delete the old data setGraph Linear RegressionsSteps for calculating the best-fitting line Calculating the best-fitting line Access the data entry screen and delete old dataActivity 2 Calculate and plot the regression line Activity 1 Calculate and plot the regression lineSteps for calculating other regression models Other RegressionsModel of best fit Other Regressions Model of Best FITActivity 2 Calculate the power regression model Activity 4 Which regression model fits the best? Statistical Tests EXE 10.3 Sharp EL-9600 Graphing Calculator Keypad forSolutions to Selected Activities Answer Key/STATISTICS Using the Sharp EL-9600 Teaching Notes

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