Lesson 4: Auditing and Additional Formulas. Return to the FastCourse Excel 2007 Level 3 book page

Transcription

1 Lesson 4: Auditing and Additional Formulas Return to the FastCourse Excel 2007 Level 3 book page

2 Lesson Objectives After studying this lesson, you will be able to: Use 3-D cell references in formulas to summarize workbook data Create a lookup function to locate a value or text in a list Build formulas with IF functions to perform actions based on criteria Correct formula errors using the auditing tools 2

3 Using 3-D Cell References in Formulas Create a formula using data in the same cell on a range of worksheets 3 Deleting a worksheet or moving a worksheet tab to outside the range in a 3-D reference affects the formula.

4 Introducing Lookup Functions: Using VLOOKUP VLOOKUP (Vertical Lookup) Finds values in tax, commission rate, and other lookup tables Syntax consists of three components (arguments) 1 st argument: Cell value to be looked up 2 nd argument: Lookup table 3 rd argument: Column number in lookup table 4

5 How PivotTables Work Function searches for 14,000 (cell C6) in left column of lookup table Formula result Search takes place in the Comm_Rate lookup table Search stops at 10,000 because the lookup value is at least 10,000 but not 20,000 Corresponding contents of 2 columns are returned to the formula cell The first column of the lookup table must be sorted from lowest to highest. 5

6 Creating a Formula with the IF Function Take an action if the logical test is true Take a different action if false 2 nd argument: Action if true 1 st argument: Logical test to be evaluated 3 rd argument: Action if false 6

7 Using an IF Function to Display Text Display Yes if true Display blank if false 7

8 Using Criteria IF Functions Use AVERAGEIF, COUNTIF, and SUMIF to calculate using one criterion 2 nd argument: Criterion 1 st argument: Cells to be evaluated 3 rd argument: Sum only the cells in this range that meet the criterion 8

9 Using Criteria IF Functions Use AVERAGEIFS, COUNTIFS, and SUMIFS to calculate using up to 127 criteria sets Only cells that meet their respective criteria are calculated 1 st argument: 1 st range to be evaluated 3 rd argument: 2 nd range to be evaluated 2 nd argument: Criterion for 1 st range 4 th argument: Criterion for 2 nd range 9

10 Tracing Formulas: Auditing Tools Analyze and debug worksheets Locate formulas dependent on a cell value Locate errors in formulas 10

11 Tracing Precedents Trace precedents Precedents = cells referenced by a formula Trace Precedents command displays arrows to precedent cells 11

12 How Tracing Precedents Works Example: Trace precedent cells included in the formula =C6*D6 Cells from the lookup table are included; they are precedents in the D6 formula Blue tracer arrows indicate precedent cells 12

13 Tracing Dependents Trace dependents Dependents = Cells containing formulas that reference the selected cell Trace Dependents command displays arrows to the dependent cells 13

14 How Tracing Dependents Works Example: Trace the formulas that depend on the value in cell C6 Use the Remove All Arrows command to remove the tracer arrows. 14

15 Checking Errors Excel displays a triangle icon Error Checking menu on a cell helps identify the cause of a formula error Error Checking command navigates to all cells with errors 15

16 Using Evaluate Formula View the sequence of calculations of each part of a formula 16

17 Using the Watch Window Displays formula results when the formula is out of view Watching the results of a formula on the Calculations sheet while working in the Factors sheet 17

18 Lesson 4: Auditing and Additional Formulas Return to the FastCourse Excel 2007 Level 3 book page