Excel functions formulas


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Excel functions formulas

  1. 1. LearnIT@LunchUnderstanding Formulas and Functions In Excel 2007IT-User Services
  2. 2. Using FormulasDuring this session you will learn about:• Basic mathematical operators• Relative and absolute cell references• Using Functions• Using the IF function• Finding the right function• Fixing errors• Working with range name
  3. 3. Formula vs. FunctionFormulas are equations thatperform calculations on values.Functions are predefinedformulas that performcalculations by using specificvalues in a certain order.
  4. 4. Mathematical OperatorsBasic Mathematical OperatorsControl order of operations with ( )
  5. 5. Mathematical OperatorsUse Parentheses to control operations
  6. 6. Exploring FunctionsFunction syntax=FunctionName(Argument1, Argument2, Agrument3)Useful & Simple Functions=SUM=AVERAGE=MIN=MAX
  7. 7. Exploring Functions=SUM (range or arguments)
  8. 8. Copying FormulaRelative ReferencesWhen a formula is copied, the referenced cellschanges*Note: The result of cut and paste is different than copy and past
  9. 9. Copying FormulaAbsolute References•Use $ to ‘lock’ the row/column reference•Press (F4) to create the ($) sign
  10. 10. Copying FormulaQuick Tips •Use Ctl + Enter •Double click the Fill Handle
  11. 11. AutoCalculateUsing AutoCalculateCalculations done by Excel on range of data
  12. 12. Display FormulasDisplaying and Printing FormulasFormulas Tab, Show Formulas button
  13. 13. Using the Function LibraryInserting FunctionsType into formula bar or use the functionlibrary
  14. 14. Finding FunctionsAutoComplete (new in Excel 2007)Type = then first letter of the function
  15. 15. Finding FunctionsFunction WizardType key words search or browse library
  16. 16. Using IF FunctionIF Function syntax=IF (test, if value true, if value false)
  17. 17. VLOOKUP Syntax =VLOOKUP(J2,$N$1:$O$4,2,FALSE) To Find an Exact MatchJ2 = Lookup value (last 4 digits of pro card)$N$1:$O$4 = Table array (pro card # with employee name)2 = Column index from table array with value to be returnedFalse = Tells Excel to return value if exact match is found This function works differently based on the 4th parameter.
  18. 18. Using FunctionsWorking with Nested FunctionsFunctions inside other functions
  19. 19. Identifying ErrorsError Messages#VALUE! – Trying to do math with nonnumeric data.#DIV/0! – Trying to divide by zero.#REF! – Occurs when a cell reference is not valid. (When a cellreferenced in formula has been deleted.)#N/A! – Occurs when a value is not available to a function orformula.
  20. 20. Naming a cell or rangeInstead of using the cell address, give thecell or range a name (e.g. grandtotal)
  21. 21. Naming a cell or range• Make formulas easier to understand and use • “procardlist” is much more meaningful than A2:B5.• Quick navigation
  22. 22. Naming a cell or rangeNaming Rules• Up to 255 characters long• No spaces (may use “_” underscore)• Cannot contain special characters (!”$)• Cannot contain operators (+-%)
  23. 23. Naming a cell or rangeDefining and Using Range NamesSelect Formulas tab and Define Name
  24. 24. Helpful Resourceswww.udel.edu/learnwww.udel.edu/help or call 831-6000www.datapigtechnologies.comhttp://office.microsoft.com/en-us/training