A **Line Graph **is
used to view a set of real data graphically. Consider the following data.

x |
0 |
1 |
2 |
3 |
5 |

y |
3 |
4 |
8 |
9 |
10 |

To create a line graph of this data, make sure that all the Y's are clear in
the menu.

Now select and set
an appropriate **Viewing Rectangle****. **Since
the *x *values range from 0 to 5, choose a range slightly larger than that,
namely -1 to 6. Since the *y *values range from 3 to 10, select 0
to 15.

Thus, the**Viewing
Rectangle** of [-1, 6,1] by [0, 15, 1], has been selected.
To set this **Viewing Rectangle**, press **WINDOW**and
enter **-1** for **Xmin**, **6** for **Xmax**,
**1 **for **Xscl**, **0** for **Ymin**, **15**
for **Ymax**,and **1** for **Yscl**.

Now press **2nd
**and then **Y= [STAT PLOT].** The calculator screen
should look the one on the left below. **1** is highlighted,
so press **ENTER** to select the first plot. Now, select **ON** in the first row, then select the second **TYPE. **
**Xlist **and **Ylist **should already be selected
as and . The **MARK
**selected does not matter, so choose one of them.

To enter the data for the scatterplot, press **STAT**, and select
**1:Edit **by pressing **ENTER. **If the lists
are not all cleared as shown in the screen below, go to see **Clearing Lists**.

Enter the data values for **X **in and the data
values for **Y** in , keeping each pair together on the same horizontal
line. Then press **GRAPH**.

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