Sine Waves

1
Sine Waves
Part II Data Analysis
2
Setting Up

• Clear any equations or lists from your calculator
  to start!
• From the Y list
• From STAT lists
• Turn Stat Plots OFF

3
Enter the Data

• Press the ? button
• Choose Edit to enter the data
• Enter your data into L1 and L2

4
Setting up your Plot

• To Get into the Stat Plot Menu, press ? ?.
• Select Plot1
• Press enter on On

5
Graphing Your Stats

• Press ZOOM
• Choose ZoomStat (9) this will change your
  window settings to fit all of the data in AND
  graph it!

6
Fitting an Equation
(This is called a sinusoidal regression)

• Press the ? button and cursor over ? to the Calc
  menu
• Cursor down to CSinReg
• Press Enter
• Enter the list names that contain your data,
  separated by a comma
• (For L1 press ??)
• To tell it where to store the equation, press ??
  for Y-Vars and then ? for functions, and then
  choose Y1
• Press Enter

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Press Graph!
Now that youve got a curve of best fit, you no
longer need the data. Turn the stat plot OFF (??
to get into the stat plot menu) and then press ?
again.

Now you are ready to answer questions about your
graph!
8
Thats it for now!