Step 17 After the word SinReg you have a
blinking cursor. Press 2nd L1 then
press comma, then press 2nd L2

Step 18 Press ENTER
(It will take a few seconds for the
screen to change)

This gives you a mathematical equation that is close to fitting your data.

Replacing the coefficients with their respective values gives;
Y = 8.8 * sin(.6X + .7 ) + 63.0

What is your equation of best fit?________________________________________

Let’s see how it fits!

Step 19 Press Y=

Step 20 Press VARS

Step 21 Arrow down to 5:Statistics

Step 22 Press ENTER