1. Akil M. Merchant CGS2060 Computer Fluency for Dr. David Gaitros CGS 2060 - Spring 2011 1 Excel with Excel

2. What is MS Excel? CGS 2060 - Spring 2011 2 Microsoft Excel is a spreadsheet software used to calculate financial, statistical and engineering information The components of Excel are cells, spreadsheets and workbooks. Cell << Spreadsheet << Workbook

3. What is MS Excel (2) CGS 2060 - Spring 2011 3 The features Excel offers make it possible for the user to save time when calculating formulas, creating charts and graphs, and sharing and securing information.

4. Features CGS 2060 - Spring 2011 4 Calculations Built in functions for math, statistics and engineering Graphing / Charting Using the data entered, one can create pie charts, bar graphs, 3D charts, histograms, scatter-graphs.. Formatting Cells can be made to display data in different manners depending upon their values

5. Features (2) CGS 2060 - Spring 2011 5 Secure Information Parts of a worksheet or entire worksheets can be made password protected, individual cells can be made read-only Integration with other software Excel charts, tables, graphs can be exported to Word, PowerPoint. Import large amounts of data (tab or comma separated)

6. Getting Started with Excel CGS 2060 - Spring 2011 6

7. 7 1)Tabs – Represent core tasks that can be done in Excel 2)Groups – Each tab has groups that show related items together 3) Commands – A button / box to perform a particular task

8. CGS 2060 - Spring 2011 8 1)Column Headers 2)Row Headers 3) Margin rulers

9. Referencing Cells CGS 2060 - Spring 2011 9 Cells are referenced by the Column (Alphabetic letter) and the Row (Number).

10. Referencing Cells (2) CGS 2060 - Spring 2011 10 In Excel 2007/2008 you have a range of: 16,384 Columns Columns Start with A-Z, AA-AZ, BA-BZ, etc. 1,048,576 Rows Rows are numbers 1 through 1,048,576 The column reference always appears first. The Cell in which you are working is always called the “Active Cell” The “Active Cell” is outlined in bold when the cursor is placed upon it.

11. Referencing Cells (3) CGS 2060 - Spring 2011 11 CELL REFERENCESREFER TO VALUES IN A10 the cell in column A and row 10 A10, A20cell A10 and cell A20 A10 : A20the range of cells in column A and rows 10 through 20 B15 : E15the range of cells in row 15 and columns B through E A10 : E20the range of cells in columns A through E and rows 10 through 20

12. Entering and Formatting Data CGS 2060 - Spring 2011 12

13. Formulas in Excel CGS 2060 - Spring 2011 13 A formula is a mathematical expression that uses one or more cells of data as input and returns a value in the cell where it is placed. Formulas can also be created in Excel to accept and return character or string values.

14. Formula Basics CGS 2060 - Spring 2011 14 Every Excel formula must begin with an equal (=) sign even the simplest formula which is a reference to a single cell. Examples: ExpressionResults =D3Reference to cell in column D row 3 =5 + 7Add values 5 and 7, results will be 12 =A1+B1Add values in cells A1 and B1 =(A1*B1*2)Multiply values in cells A1 and B1 by 2. =(2*(A1-B1)/42)Subtract values in B1 from A1, divide that number by 42 and multiply by 2.

15. Operator Precedence CGS 2060 - Spring 2011 15 Arithmetic Operations Order of PrecedenceExample ( ) ParenthesesAnything inside of parentheses will be evaluated first. =(A1-(B1/C1)) ^ ExponentiationExponentiation (raise a number to a power) will be evaluated before others. =B5^2*C1 * Multiplication / Division Multiplication and Division have the same precedence. They will be executed before subtraction or addition. =B5*C6 – C1 + Addition -Subtraction Addition and Subtraction have the same precedence and will be evaluated last. In the example to the right, the multiplication operation will be executed first. =(C1-C2*B5)

16. Operator Precedence Examples CGS 2060 - Spring 2011 16 Formula A1=50 B1=10 C1=5 Order of Precedence RuleResult =A1+B1*C1Multiplication will be evaluated before addition100 =(A1+B1)*C1Expression inside parentheses executed before expressions outside 300 =A1/B1-C1Division will be evaluated before subtraction0 =A1/(B1-C1)Expression inside parentheses executed before expressions outside 10 =A1/B1*C1Two operators of the same precedence, the leftmost one will be executed first. 25 =A1(B1*C1)Expressions inside parentheses executed before expressions outside 1

17. Functions : Built in Formulas CGS 2060 - Spring 2011 17 Cells can contain References to other cells (absolute or relative), Static numeric or character values, Formulas, Complex functions. What are functions? A function is a name operator that accepts input of values or cell references and returns a value to the cell in which it is contained.

18. Basic Excel Functions CGS 2060 - Spring 2011 18 FunctionDescriptionExample =SUM()Adds all of the values or cell references and returns the number to the cell in which it is placed. =SUM(A1:A25) =AVERAGE()Obtain the average of the values or cell references and returns the number to the cell in which it is placed. =AVERAGE(12,13,B5:B10) =STDEV()Obtain the standard deviation of values or cell references and returns the number to the cell in which it is placed. =STDEV(B5:B10,C5:C10) =MAX()Looks at the values and/or range of cells and return the largest values. =MAX(B5:G10) =MIN()Looks at the values and/or range of cells and return the smallest value. =MIN(B5:G10,12,15)

19. Relative and Absolute Cell References CGS 2060 - Spring 2011 19 1)Relative references change as they are copied. 2) Absolute references stay the same as they are copied.

20. Relative References CGS 2060 - Spring 2011 20 Every relative cell reference in a formula automatically changes when the formula is copied down a column or across a row. As the example illustrated shows, when the formula =C4*$D$9 is copied from row to row, the relative cell references change from C4 to C5 to C6.

21. Absolute References CGS 2060 - Spring 2011 21 An absolute cell reference is fixed. Absolute references don't change if you copy a formula from one cell to another. Absolute references have dollar signs ($) like this: $D$9. As the example shows, when the formula =C4*$D$9 is copied from row to row, the absolute cell reference remains as $D$9.

22. Example Use of Absolute Reference CGS 2060 - Spring 2011 22 Since the same Extra Credit is Applied to all students, we reference The same cell (=$D$15). Changing the value in Cell $D$15 Will change ALL of the places that Reference that cell.

23. Summary CGS 2060 - Spring 2011 23 Introduction to MS Excel and its features The MS Excel interface (ribbon, worksheets, cells) Referencing Cells Formulae in Excel Operator Precedence Functions in Excel Absolute and Relative Cell References