the two basic principles for setting up effective spreadsheets
focus on form, and explain everything
focus on form means
make the form logical, the layout clean, and the entries clear and easy to use
explain everything means
it should be possible to know immediately what every cell means
Conditional formatting
allows us to apply an interpretation to the data-payments are within budget, payments are over budget- and express that interpretations in an easily perceived manner
scenario
is named alternative to a spreadsheet based on different inputs
filtering
selects only certain rows from a list