Scatter Plots with Your calculator

Section 4-6

Page 636#10

Calculator Set-up

One Time Only!

Press STAT

Option #5 Set up Editor, hit enter and enter again

Clearing Lists

Press STAT again

Option #4 Clear List (enter) then hit 2nd L1, L2, L3, L4, L5, L6 (enter)

Entering Numbers

Press STAT:

#1 EDIT : under L1, type the first number (enter), type second number (enter)…

Right arrow over to Column L2, type first number (enter), type second number (enter)…

Window Range

Determine largest and smallest number in each list

DO NOT REARRANGE LIST!!!

L1 62 ---- 73

L2 115----168

Window

Xmin: 60

Xmax: 75

Xscale: 1

Ymin: 110

Ymax: 180

Yscale: 10

Scatter Plots

Hit 2nd and Y= (Stat Plot)

1: (enter) ON

Type: 1st Option

X list: L1

Y list: L2

Mark: BOX

Graph

Line of Best fit

Hit STAT:

Arrow to the right to the CALC heading

#4 Linreg(ax+b) enter

Linreg(ax+b) L1, L2

a is the slope

b is the y intercept

Check

Hit Y=

Type in your Y=ax+b in the Y1

Make sure that it is the line of best fit and follows the pattern of the points.

Homework

Page 652 #’s 3, 5, 6, 8 and 9