Sharp EL-9600 Calculating the best-fitting line, Access the data entry screen and delete old data

NAME _____________________________________________________ CLASS __________ DATE __________

8.2

LINEAR REGRESSIONS

Calculating the best-fitting line

1. Access the data entry screen and delete old data.

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

2. Enter the following data set:

X Y

11 35

14 30

17 28

21 23

26 21

29 19

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

4. Find the best-fitting line (regression line) for the data.

5. Set up the scatter diagram.

6. Set the viewing window to Xmin = 10, Xmax = 30, Xscl = 5, Ymin = 15, Ymax = 40, and Yscl = 5.

7. Press Y= CL to clear any previously entered expressions. Press GRAPH to view the scatter diagram.

8. Overlay of the regression line and the scatter diagram, by pressing Y= VARS , touch H STAT, press ENTER , touch B REGEQN, double touch 1 RegEqn, and press GRAPH .

80Blackline Masters/STATISTICS USING THE SHARP EL-9600