1. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 1 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege.edu Engr/Math/Physics 25 MS Excel WorkSheets

2. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 2 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Learning Goals  Enter Data into Excel Use Copy and Fill  Perform Calculations Using Excel Writing “Formulas” –Proper Syntax –InterRelationship Between Cells Invoking and Using Built-in Functions  Explain the difference between ABSOLUTE and RELATIVE addresses

3. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 3 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Learning Goals cont  Construct Charts and Graphs Comparison Charts → Bar, Col, Radar Analysis Charts → Scatter, Surface –Curve Fits → Linear Regression

4. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 4 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods SpreadSheets  SpreadSheet Defined  A table of values arranged in rows and columns. The Intersection of a Row & Column is Called a Cell. Each cell-value can have a predefined relationship to the other cell values. change one other values may change interrelationshipIf you change one cell-value other values may change depending on the interrelationship of the cells.

5. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 5 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods MicroSoft Excel  Excel is the MS-Office Application program used to create spreadsheets  Within Excel, users can organize data, create charts, and perform calculations.  Excel allows the user to create very large spreadsheets, reference information from other spreadsheets, and it permits organized storage and modification of information  Excel operates like other MS Office programs and has many of the same functions and shortcuts as MSword & MSpowerpoint

6. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 6 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Why Excel?  Excel can do most (not all) of the common (i.e., useful & popular) tasks done in MATLAB or similar software  Excel is much more accessible MATLAB is Powerful, but it’s also SPECIALIZED and EXPENSIVE Excel is: Ubiquitous, and Quick & Easy  Excel is much more POWERFUL than Many people think

7. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 7 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods MSExcel 2010 Specifications http://office.microsoft.com/ en-us/excel-help/excel- specifications-and-limits- HP010342495.aspx?CTT =5&origin=HP005199291 17e9 cells/wksht

8. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 8 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Excel WorkSheet (1)  An Excel File is also Called a WORKBOOK Each workBOOK can Contain a large number of workSHEETs (>200)  Where a column and a row intersect is called a CELL. For example, cell B5 is located where column B and row 5 meet. You enter your data into the cells on the Active (Displayed) worksheet  The tabs at the bottom of the screen represent different worksheets within a workbook. Selected Cell NAME BOX: Displays Selected Cell Active WorkSheet WorkSheet Scroll Buttons

9. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 9 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Excel WorkSheet (2) Active Cell The NAME BOX indicates what cell you are in. This cell is called the “active cell.” This cell is highlighted by a black box. Text DOES appear in a Text Cell The FORMULA BAR indicates the contents of the cell selected. Any formula created will appear in this space The RESULT of the Formula will Appear in a Formula Cell; NOT The formula itself

10. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 10 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Excel Data Types  Spreadsheets can contain Several types of data Numbers Text Dates & Time –Can Add, Subtract Currency Charts Equations Pictures

11. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 11 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Cell Addressing  COLUMNS are designated by alphabetical values such as A, B, C ….  ROWS are designated by numerical values such as 1, 2, 3 ….  Individual cells are designated by ordered pairs containing the row and column designation such as A1,C7, B10 …. B10 =Active Cell

12. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 12 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Excel DATA Entry  Move the Mouse Pointer to the Desired Cell  Click Cell to Make it Active, then do One of Type Data DIRECTLY Into the Cell Move Cursor to FORMULA BAR and type there Type in Cell Type in Formula Bar

13. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 13 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Excel FORMULA Entry  To Write a Formula, Rt-Clik the Cell To make it Active Start Typing, OR Type in Formula Bar  You can also calculate values using formulas.  The formula can perform mathematical operations using data from other cells.

14. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 14 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Fill FORMULAS  Enter the Formula in One Cell  Select the Formula Cell, Bottom Rt Corner of selection Box turns to a “+”  Drag the the + up/down or Across  “Cell References” adjust automatically

15. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 15 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Fill DATA  If you need to enter an INCREMENTED Data Series you can skip making a Formula, and Use FILL instead Type the First 2 or 3 values in the Sequence Select the Data Cells, Bottom Rt Corner of the selection Box turns to a “+” Drag the the + up/down or Across

16. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 16 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Anatomy of a Formula RELATIVE Reference; Changes when cell Filled, Copied or Moved ABSOLUTE Reference; Does NOT Change when cell Filled, Copied or Moved MIXED Reference; COL (F) Changes, while ROW (16) Does NOT when moved or copied

17. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 17 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Excel Built In Functions  SUM (math & trig)  AVERAGE (statistical)  SIN (math & trig)  IF (logical)  NPV (financial)  CONCATENATE (text)  LOOKUP (lookup and reference)  Many More …

18. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 18 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods SUM(number1, number 2,…)  Example =SUM(5,7,11) equals 23  If cells A2:E2 contain 5, 15, 30, 40, 50: =SUM(A2:C2) equals 50 =SUM(A2:E2, 13) equals 153

19. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 19 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods AVERAGE(number 1, number 2,…)  Example REGION A1:E1 is NAMED “Luminance”  Then Several Average Calcs

20. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 20 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods SIN(number)  NOTE: Angle (number) must be provided in radians If The argument is in degrees (°), Use the RADIANS Fcn to convert it to radians.  Some SIN & COS Calcs

21. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 21 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods IF Function  The Syntax  Logical_test  any value or expression that can be evaluated as TRUE or FALSE. =IF(A10<=100,"Within budget","Over budget") =IF(A10=100,SUM(B5:B15),"")  Value_if_true  value returned if logical_test = TRUE  Value_if_false  value returned if logical_test = FALSE NOTE: Value_if_false can also be another formula.  Up to 64 IF functions can be nested in Excel 2010 IF(logical_test,value_if_true,value_if_false)

22. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 22 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Logical Operators  EXCEL = (equal to) > (greater than) < (less than) >= (greater than or equal-to) <= (less-than or equal-to) <> (not equal to)  MATLAB == (Equal To) > (Greater Than) < (Less Than) >= (Greater Than or Equal-To) <= (Less Than or Equal-To) ~= (Not Equal To)

23. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 23 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods COUNTIF(range, criteria)  Counts the number of cells within a range that meet the given criteria  Let C5:C8 contain "apples", "oranges", "peaches", "apples", respectively: COUNTIF(C5:C8,"apples") equals 2  Suppose P2:S2 contain 29, 54, 73, 86, respectively: COUNTIF(P2:S2,">55") equals 2

24. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 24 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Example  Data Scaling (1)  Consider a NATION wide Survey of Engineering Baccalaureate New Grad Salaries  Now Examine Similar Data from UC Berkeley  UCB Salaries are Higher

25. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 25 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Engineering Noted in GREEN Color

26. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 26 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods

27. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 27 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Example  Data Scaling (2)  We want to NORMALIZE (i.e. Scale-UP) the National Data to Account for the higher Salaries (and Cost-of-Living) in the SF Bay Area  Use as Scale Factor the Avg Engineering Salaries  Take from the NACE Data The average of

28. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 28 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods All Done for Today YouTube Excel Tutorials Excel Tutorials  Google Videos → Excel Tutorials

29. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 29 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Bruce Mayer, PE Licensed Electrical & Mechanical Engineer BMayer@ChabotCollege.edu Engr/Math/Physics 25 Appendix

30. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 30 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Demo Start = Demo_Salary- Survey_Scaling_Demo-Start_1012.xls

31. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 31 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Demo CALC = File Demo_Salary-Survey- 2004_Scaling_0511.xls

32. BMayer@ChabotCollege.edu ENGR-25_Lec-28_Excel-1.ppt 32 Bruce Mayer, PE Engineering/Math/Physics 25: Computational Methods Demo Result from CHART WIZARD w/ Fine Tuning = File Demo_Salary-Survey- 2004_Scaling_0511.xls