Note You cannot change the column widths while the worksheet is protected.
Different spreadsheet windows
An Excel spreadsheet (or 'Workbook' as Microsoft call it) can contain several different 'sheets'. Some of these will be 'worksheets' (what most people think of as 'spreadsheets'), while others maybe graphs (which Microsoft call 'charts').
You can have several 'window' into a given spreadsheet open at once, and each of these can contain either a worksheet or a graph. Each window can be moved and sized separately, enabling you to display data and graphs at the same time.
At the bottom of each window you will normally see a series of tabs. The one highlighted indicates the sheet which iscurrently visible in the window. To change to a different sheet, click the relevant tab.
Closing all spreadsheet windows
If you have a spreadsheet with several windows open, clicking the red 'X' in the top left hand corner of a window, only closes that window. To close the spreadsheet and all windows, go to the File menu and choose Close.
Making worksheet and graphs visible at the same time
Click the Restore Window button in the top right hand corner of the screen:
Then move (by dragging the title bars) and resize (by dragging the edges) until all the windows are arranged as you want them.
Look at the tabs at the bottom to determine what is visible in each window (worksheets or graphs).
If you need more windows open to see all the graphs that you want to see at once, go to the Windows menu and choose New Window.
Hint Don't forget that some windows may be hidden between others (go to the Windows menu and look at the bottom of the list to check which windows are open).
Using the zoom feature to see more on screen
You can change the zoom factor using this control in the Excel toolbar:
How to generate frequency charts (histograms)
The Excel function COUNTIF does this for you. These two pictures show the formulae and the result for a situation in which a number of different species of trees are listed in cells B6 to B30. Once tabulated, the frequencies can be plotted on a bar chart.
How to copy pictures of cells and graphs into Word
If you hold down the Shift key the Copy in the Edit menu changes to Copy picture. You can use this to copy a whole graph or a selection of cells so that they can be pasted into Word, or another application.
Interactive labels for plots on graphs
It is often useful to be able to label individual data plots with the corresponding values of parameters, so that you can make comparisons between them. To do this create a cell which contains the relevant information. For example, if you wanted to label several plots corresponding to diffent growth rates, and the cell containing the growth rate is named growth, then put this formula into an appropriate cell:
="growth rate = "&growth&" % per year"
If the growth rate is 6, this formula will then show growth rate = 6 % per year. Note the use of the ampersand to join (or 'concatenate') text and numerical values. Note also the use of spaces within the quote marks.