A range is a group of cells, defined by upper left hand cell address:lower right hand cell
address, such as A1:B2 is
A B
1 1 3
2 2 4
3
4
This could be use in another function (a more complex formula) such as =SUM(a1:b2)
would yield 10
Many functions are started by choosing the fx
Patterns
If you type in 1, 2, 3… you might expect the pattern to continue as 4, 5, 6. Excel would
too. Highlight A1:A3, and you’ll notice a box to the lower right. Drag that box down
(your cursor changes to a +) to continue the pattern.
A B
1 1 3
2 2 4
3 3
4
This can work with formulas too. If A4’s formula is =SUM(A1:A3), dragging that to B4
would duplicate the pattern of adding ‘everything above;’ B4 would now say
=SUM(B1:B3)
Relative addresses (such as adding ‘everything above’) can be useful, but sometimes you
don’t want the cell addresses to vary as you drag a formula to a new cell. Maybe you
really do want the copy to say =SUM(A1:A3) in both places, and not =SUM(B1:B3) in
the second cell… to do that you change the original formula to use something called an
absolute address… meaning if the formula gets copied, do NOT change the cell addresses
relative to the new formula as the copy occurs.
It looks odd, but it is simple, change the first formula have a $ precede each part of the
cell address, such as =SUM($A$1:$A$3).
If you see a cell with #####, this means the cell is not wide enough to display the
number. Place your cursor between the two column headings, and when the arrow
changes to ,click and drag to make the column wider.
A B
1 #########