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Published byMalcolm Chandler Modified over 9 years ago
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IENG 423 Design of Decision Support Systems Modeling with Excel Excel Basics Cell references, Formulas, Functions and Formatting
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MS Excel Formulas In most spreadsheet applications you will want to do calculations in cells …usually in a lot of cells You will use formulas to express these calculations
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MS Excel Formulas In a cell, enter an = followed by the arithmetic expression (formula) that you want calculated The formula can contain Cell references - F5 Arithmetic operators +-*/^ Constants 3.14 Functions
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MS Excel Formulas – Arithmetic Operators OperationOperator Addition+ Subtraction- Multiplication* Division/ Exponentiation^ Precedence( )
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MS Excel Formulas – Arithmetic Precedence “Please Excuse My Dear Aunt Sarah” Parentheses control the order of operations, then- Multiplication/Division Addition/Subtraction Within a precedence level go from left to right
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MS Excel Formulas =B4+C4 =F35 * 3.14 =3*2+4 =3*(2+4) Same?
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MS Excel By the way You can toggle between calculation view and formula view (to see your formula) with… Ctl + ~
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MS Excel Cell References Recall that cell references consist of row letter + the column number of the cell of interest A1, Z23 YYY99 If you use a cell reference in a formula and move that formula… …Excel will try to update the cell reference in that formula That’s called a Relative Reference
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MS Excel Cell References Sometime you will not want the cell reference updated Absolute Reference Use $ in cell reference $A$4 - neither row part or column part of reference can be changed $A4 – row reference can change, but column reference can not A$4 – column reference can change but row reference can not
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MS Excel Cell References Absolute References F4 key on keyboard will cycle a reference through absolute, column absolute, row absolute and relative reference for a specific cell
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MS Excel Cell References Named Ranges You can give selected ranges of cells names… Then refer to them by name You can to this with a single cell
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MS Excel Cell References Named Ranges 1 – select a range, click in the name box, then enter the name that you want to use for this 2 – select a range, click on Insert from menu bar, click on name, then define… you will then see a name dialogue box, Excel will try to anticipate what you are doing, correct as needed
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MS Excel Cell References Named Ranges You can use names – To jump to specific parts of a workbook Or in formula in place of cell references
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MS Excel Functions Functions are predefined sets of operations The key to using functions effectively in understanding the arguments
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MS Excel Functions Several ways to insert a function Insert (on menu bar) Right click on cell and select Insert – Function Select cell to hold function and click on function symbol next to function bar
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MS Excel Some common functions =SUM() =AVERAGE() =COUNT() =MAX() =MIN()
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MS Excel There are a lot more Math & Trig Statistical Time/Date Text Financial Logical Lookup
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MS Excel Functions Functions can be used alone Functions can be combined with other expression in a formula If it is the right type Functions can be nested
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MS Excel Formats Cell formats General Number Date/time Percentage Special Custom
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