1. ENGR 1181 College of Engineering Engineering Education Innovation Center Excel 1

2. ENGR 1181 Introduction to Excel Excel is a powerful spreadsheet program which can be used for: –Creating graphical displays of data –Performing sophisticated data analysis –Problem solving Open Excel and follow along as we look through some of the features

3. ENGR 1181 Excel Layout Currently active cell(s): referenced by column and row. Fill Handle Tool Ribbon Note: Save and Print are under the File tab Fill Handle Formula Bar

4. ENGR 1181 Review - Data Analysis with Excel Excel offers many capabilities for analyzing data: 1.Trendlines for predicting data values 2.Use of equations to do sophisticated calculations with the worksheet data using cell referencing 3.Comprehensive library of built-in functions to help calculate and analyze spreadsheet data

5. ENGR 1181 Review - Cell Reference: Relative Addressing Relative Cell Address – refer to the cell in the same relative position Ex: B12 – relative reference to value in cell B12, use fill handle to drag to cell C17 Step 1Step 2Step 3

6. ENGR 1181 Review - Cell Reference: Absolute Addressing Absolute Cell Address – always refer to the same cell Ex: $B$12 – absolute reference to value in cell B12, use fill handle to drag to cell C17 Step 1 Step 2Step 3

7. ENGR 1181 Review - Formulas and the Excel Function Library Formulas are used to calculate values in a cell in a worksheet based on values stored in other cells with optional use of the Excel function library. There are hundreds of functions available

8. ENGR 1181 Review – Examples of Functions in Excel Trigonometric functions COS(cell) – calculates cosine of an angle PI() – calculates pi Mathematical functions EXP(cell) – raises e to the power “cell” SQRT(cell) – finds the square root of cell Statistical functions AVERAGE(cells) – finds the mean of a list of cells STDEV(cells) – finds the standard deviation of a list of cells

9. ENGR 1181 Review - Formulas and the Excel Function Library Formulas are used to calculate values in a cell in a worksheet based on values stored in other cells with optional use of the Excel function library. There are hundreds of functions available

10. ENGR 1181 Review – Examples of Functions in Excel Trigonometric functions COS(cell) – calculates cosine of an angle PI() – calculates pi Mathematical functions EXP(cell) – raises e to the power “cell” SQRT(cell) – finds the square root of cell Statistical functions AVERAGE(cells) – finds the mean of a list of cells STDEV(cells) – finds the standard deviation of a list of cells

11. ENGR 1181 Order of Precedence Higher-precedence operations are executed before lower-precedence operations If two operations have the same precedence, then the expression is executed from left to right. Excel’s Order of Precedence is: 1.Parentheses (innermost pair first) 2.Exponentiation 3.Multiplication and Division 4.Addition and Subtraction

12. ENGR 1181 Good Graphing Practices Choose an appropriate graph type for the data Excel offers many choices

13. ENGR 1181 Good Graphing Practices Every graph must have a title and axis labels. Axes labels must include units. When more than one data set is shown on the same graph, a legend is needed. Graphs must be neat and easily readable. Let’s work on an example…

14. ENGR 1181 Formatting Multiple Lines When there are multiple lines on one graph, you need to change the line style to improve clarity. What happens if we print this graph in black & white? What could we do to improve readability?

15. ENGR 1181 Changing Line Styles 1.Select the desired line on the graph 2.Select Format 3.Select Shape Outline 4.Select Dashes and choose desired style

16. ENGR 1181 Adding Excel Graphs to Word Docs It's easy! 1.Select the graph 2.Right click and select Copy 3.Open the Word document 4.Right click and select Paste

17. ENGR 1181 Predicting Data - Trendlines Excel graphing allows you to graph data and then create an equation that best fits that data. You can choose the type of equation for Excel to use, such as linear, exponential, logarithmic, etc. With a best-fit equation you can predict data values not included in the worksheet Note: You must use X-Y Scatter Plots