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LINEST function - Microsoft Support
This article describes the formula syntax and usage of the LINEST function in Microsoft Excel. The LINEST function calculates the statistics for a line by using the "least squares" method to calculate a straight line that best fits your data, and then returns an array that describes the line.

Change the color, style, or weight of a line - Microsoft Support
You can change the look of a line shape by changing its color, line style, or weight. If you are using Excel, Outlook, Word, or PowerPoint, you can apply a predefined Quick Style to quickly change the look of your line.

Start a new line of text inside a cell in Excel - Microsoft Support
To start a new line of text or add spacing between lines or paragraphs of text in a worksheet cell, press Alt+Enter to insert a line break. Double-click the cell in which you want to insert a line break (or select the cell and then press F2).

Apply shading to alternate rows or columns in a worksheet
One way to apply shading to alternate rows or columns in your worksheet is by creating a conditional formatting rule. This rule uses a formula to determine whether a row is even or odd numbered, and then applies the shading accordingly. The formula is shown here:

Find or replace text and numbers on a worksheet
Use the Find and Replace features in Excel to search for something in your workbook, such as a particular number or text string. You can either locate the search item for reference, or you can replace it with something else. You can include wildcard characters such as question marks, tildes, and asterisks, or numbers in your search terms.

Wrap text in a cell - Microsoft Support
Microsoft Excel can wrap text so it appears on multiple lines in a cell. You can format the cell so the text wraps automatically, or enter a manual line break. In a worksheet, select the cells that you want to format. On the Home tab, in the Alignment group, select Wrap Text.

Insert a line break in a cell - Microsoft Support
To add spacing between lines or paragraphs of text in a cell, use a keyboard shortcut to add a new line. Click the location where you want to break the line. Press ALT+ENTER to insert the line break. Was this information helpful?

Underline cell contents, entire cells, or rows on a worksheet ...
There are several ways to add underlining to data on a worksheet. You can underline all or selected text in cells, apply a bottom border to cells or rows, or draw a line to underline cells.

Add or remove a secondary axis in a chart in Excel - Microsoft Support
Select Combo > Cluster Column - Line on Secondary Axis. Select Secondary Axis for the data series you want to show. Select the drop-down arrow and choose Line .

Edit titles or data labels in a chart - Microsoft Support
To edit the contents of a title, click the chart or axis title that you want to change. To edit the contents of a data label, click two times on the data label that you want to change. The first click selects the data labels for the whole data series, and the second click selects the individual data label.