Using Technology & Lines of Best Fit
I can construct graphs and lines of best fit using a graphing calculator.
Go to page 45, Example 2 in the textbook
Click ENTER on the cell, then add type in your data
Click ENTER to go to the cell below
Enter in your data
Click the HOME/ON button
Scroll the cursor to the bottom (x-axis), click and select the variable for the x-axis
Scroll the cursor to the left side (y-axis), click and select the variable for the y-axis
Click MENU, Analyze, Add Movable Line
Click MENU, Analyze, Regression, Show Linear (mx+b)
Summary:
New document
Lists and spreadsheets (to enter data)
Home
Graph button (picture of bar graph)
Add labels to x and y axes
Menu Analyze Regression Show Linear (mx + b) To get equation of line of best fit
More Practice
Daily high temp (°C) Peak electricity demand (MW)
24 19 503
23 18 832
24 19 150
27 20 613
29 21 544
30 22 237
26 20 082
29 21 819
32 23 488
34 24 950
