In both the formula bar and the cell itself.
Formula bar
in the cell and in the formula bar
Yes. If your data source is deleted or moved, you spreadsheet will have no data to display.
You do not convert any data in Excel. A table is a layout to organize the data. If you want the data to look like it is in a table, then move the data to where you would like it to display.
Word normally hosts data from Excel. It can display charts that are linked from Excel and will show data from Excel in tables in Word. A Paste Link can be set up, so that if the data changed in the Excel document, it will also change in the Word document.
symbol set, millimeters
There are lots of ways. Data can be typed in directly. Data can be copied and pasted from other files and applications. Data can be imported from other file formats, like text files.
A cell that is outlined in green is normally the second cell referenced in a formula, when you start to edit the formula. It does not have to have any data in it. You could be referring to the active cell, but that is not outlined in green and again it does not have to have anything typed into it.
In excel or similar programs, it is used to graph/display data in a rectangular fashion.
Display data in a way that can be easily printed.
You can format any chart to display either horizontally or vertically.
It's called a Bar Graph. Excel and othe software can create them for you with info you supply.
You can use a variety of software programs to display data in a report. A couple of options are MS Word or MS Excel, but MS Word may be your best choice, since it is much better at formatting reports.