Spreadsheet

Spreadsheet

1. Benefits

   • When data changes, formulas automatically recalculate
   • Computers do not make mathematical errors like humans, but GIGO still aplies
   • Charts and graphs can be produced and customized very easily.
   • You can change information in a spread sheet model to make and test predictions (what is investigations)

2. Formatting

   • Cells can be formatted according to their data type, e.g cells with money can automatically have a pound (£) sign placed at the front by assigning a currency data type
   • Coloured Borders, or lines, can be added to the edge of each cell.
   • Cells can be merged or combined together, e.g cells A1:C1 can merge to form one bid cell of A1
   • The font can be changed, e.g font style, colour, bold or italics
   • The background fill tool can change the colour of the cells

3. Formulas

   • =A1+B1 - The plus sign here adds up cells A1 and B1
   • =A2-B2 - The minus sign te=akes away B2 from A2
   • A3*B3 - The asterisk sign multiplies A3 and B3
   • A4/B4 - The forward slash sign divides A4 by B4
   • When you replicate (drag) a formula down a spreadsheet, the cells in the formula will change depending on what row the formula is in. This feature is called a relative cell reference. If we need to, we can stop this from happening by placing a dollar ($) signs before each letter and number of the cell reference. Now when we replicate the formula, we will have fixed, absolut cell references