## Where is Y hat on TI-84?

Press [VARS], arrow right to highlight Y-VARS and press [1] to select the Y1 function. Press [ ( ] [2nd] [L1] [ ) ]. Press [ENTER] to calculate the y-hat values which will be displayed in L3.

## How do you find the predicted value on a TI-84?

TI-84: How to Find Expected Value of a Probability Distribution

- Press Stat, then press EDIT. Then enter the data values in column L1 and their probabilities in L2:
- Once you press Enter, the following values will appear in column L3:
- Once you press Enter, the expected value will be displayed:

**Can you graph a vertical line on TI-84?**

I am using a TI-84 Plus graphing calculator. To graph a vertical line: Hit the [2ND] key followed by the [PRGM] key.

**How do you do line of best fit?**

How do I construct a best-fit line?

- Begin by plotting all your data.
- Draw a shape that encloses all of the data, (try to make it smooth and relatively even).
- Draw a line that divides the area that encloses the data in two even sized areas.
- Congratulations!

### How do you find line of best fit on a graphing calculator?

Press e and set up as shown. Press @ and set up appropriately Press S> to get this screen. or choose Zoom:Stat. If the data looks linear, Press e`Ω,`æ,v>ee select 4:LinReg(ax +b) as shown. to get this screen. This will calculate the best fitting line for your data whose x-values are in L1 and y-values are in L2.

### How do you predict the line of best fit?

A line of best fit can be roughly determined using an eyeball method by drawing a straight line on a scatter plot so that the number of points above the line and below the line is about equal (and the line passes through as many points as possible).

**How do you find the predicted value?**

The predicted value of y (” “) is sometimes referred to as the “fitted value” and is computed as y ^ i = b 0 + b 1 x i .

**How do you make a vertical line on a TI-84?**