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Excel 2007 Essential Training
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What-If Analysis


From:

Excel 2007 Essential Training

with Lorna Daly

Video: What-If Analysis

What if analysis let's you use the power of computer to do many mathematical calculations for you very quickly. If you know the result that you want from a formula, but not the input values that the formula needs to get that result, you can use the Goal Seek feature. And that's found under the Data tab, in the Data tools area. Excel is fairly powerful and you have three different What-If analysis options, but we're going to concentrate on the Goal Seek function in this movie and in our basics.
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  1. 36s
    1. Welcome
      36s
  2. 10m 57s
    1. Why use a spreadsheet?
      1m 44s
    2. What's changed in Excel 2007?
      5m 37s
    3. The Ribbon
      2m 9s
    4. The Microsoft Office Button
      1m 27s
  3. 12m 10s
    1. What's on the Ribbon?
      1m 56s
    2. Making your way around the Ribbon
      2m 12s
    3. Customizing the Ribbon
      3m 8s
    4. Customizing the Microsoft Office Button
      4m 54s
  4. 16m 15s
    1. Opening old worksheets
      2m 24s
    2. Adding and deleting worksheets
      3m 18s
    3. Inserting and deleting cells
      6m 53s
    4. Freezing areas of a worksheet
      3m 40s
  5. 20m 51s
    1. Width and height
      7m 25s
    2. Numeric formats
      2m 21s
    3. Alignment of data
      3m 19s
    4. Playing with fonts
      2m 58s
    5. AutoFilter
      2m 21s
    6. Formatting as a table
      2m 27s
  6. 21m 31s
    1. Removing duplicates
      6m 1s
    2. What is Conditional Formatting?
      2m 21s
    3. Working with Conditional Formatting
      2m 14s
    4. Managing Conditional Formatting rule preferences
      2m 39s
    5. Converting text to columns
      4m 35s
    6. Data validation
      3m 41s
  7. 10m 56s
    1. Templates
      3m 45s
    2. Styles
      3m 35s
    3. AutoFormat
      3m 36s
  8. 12m 16s
    1. Excel lists have now become tables
      2m 34s
    2. Converting text to columns
      3m 11s
    3. Sorting and Grouping
      5m 9s
    4. Creating a summary report
      1m 22s
  9. 6m 44s
    1. Proofing your work
      3m 31s
    2. Providing comments on worksheets
      3m 13s
  10. 11m 43s
    1. Protecting and sharing a worksheet
      3m 57s
    2. Allowing others to edit ranges
      4m 3s
    3. Track Changes
      3m 43s
  11. 22m 43s
    1. Preparing to print
      2m 31s
    2. Print Preview
      3m 33s
    3. The Page Layout Tab
      3m 56s
    4. Page Breaks
      4m 36s
    5. The Page Layout View
      3m 54s
    6. Headers and Footers
      4m 13s
  12. 22m 34s
    1. Adding themes to your worksheet
      2m 53s
    2. Page setup options
      8m 0s
    3. Scale to Fit
      2m 26s
    4. Worksheet options
      5m 29s
    5. Inserting images
      3m 46s
  13. 3m 50s
    1. Using templates
      3m 50s
  14. 17m 48s
    1. Workbook Views
      2m 53s
    2. Hiding and Zooming
      3m 44s
    3. Window Panes
      5m 31s
    4. More screen options
      5m 40s
  15. 8m 16s
    1. Importing from Access
      2m 24s
    2. Using the Import Wizard for text files
      5m 52s
  16. 11m 23s
    1. The Find and Select button
      4m 34s
    2. Find and Replace
      2m 48s
    3. Removing duplicates
      4m 1s
  17. 17m 3s
    1. What are formulas?
      3m 20s
    2. Order of Operations
      2m 50s
    3. Relative and absolute referencing
      4m 54s
    4. The new Formula Tab
      5m 59s
  18. 17m 29s
    1. What are Functions?
      2m 57s
    2. AutoSum
      2m 47s
    3. Minimum
      3m 55s
    4. Trim
      5m 2s
    5. Left
      2m 48s
  19. 19m 51s
    1. Concatenation
      4m 10s
    2. SumIf
      4m 23s
    3. Lookup
      7m 25s
    4. What-If Analysis
      3m 53s
  20. 16m 44s
    1. Why create a chart?
      2m 12s
    2. Creating your chart
      3m 37s
    3. Modifying your chart
      6m 46s
    4. Laying out your chart
      4m 9s
  21. 17m 23s
    1. What are PivotTable reports and PivotChart reports?
      2m 32s
    2. Creating a PivotTable
      4m 47s
    3. Laying out your PivotTable
      2m 30s
    4. Designing your PivotTable
      4m 9s
    5. Creating a PivotChart
      3m 25s
  22. 8m 57s
    1. Why use macros?
      2m 14s
    2. Creating a macro
      4m 31s
    3. Macro security
      2m 12s
  23. 5m 36s
    1. Reviewing a workflow in Excel
      5m 36s
  24. 22s
    1. Conclusion
      22s

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Excel 2007 Essential Training
5h 13m Beginner Jan 31, 2007

Viewers: in countries Watching now:

Like the other applications in Microsoft Office 2007, Excel 2007 boasts upgraded features and a brand-new look. In Excel 2007 Essential Training , instructor Lorna A. Daly introduces the new version in detail. The training begins with the essentials of using the program, including how and why to use a spreadsheet, how to set up and modify worksheets, and how to import and export data. Lorna then moves on to teach more advanced features, such as working with functions and macros. Exercise files accompany the tutorials.

Subjects:
Business Spreadsheets
Software:
Excel
Author:
Lorna Daly

What-If Analysis

What if analysis let's you use the power of computer to do many mathematical calculations for you very quickly. If you know the result that you want from a formula, but not the input values that the formula needs to get that result, you can use the Goal Seek feature. And that's found under the Data tab, in the Data tools area. Excel is fairly powerful and you have three different What-If analysis options, but we're going to concentrate on the Goal Seek function in this movie and in our basics.

EatCake has been doing very well and are thinking of expanding so they want to be able to take a loan out of $100,000, and pay it over 180 months. They have a particular payment in mind, but they want to know if the interest rates are anywhere near the right levels for them to be able to secure a loan of this amount. They're not really sure what interest rates will allow them to do that. So rather then putting in values here and trying to calculate numbers here to work with this particular formula, we're going to use the What-If analysis, in the Goal Seek options.

And I'm just going to move this particular dialog box up here so it's closer to the top of our screen. Basically, what this dialog box is asking us is it's asking us to set a particular cell, which is our final payment, to a value. And we're going to put in a value of $900. We have to put it in as a negative value in this particular instance because the payment that we're looking at comes out as a decrease of our overall payment we need to make.

So I'm going to put it in as a -$ 900 because that's what I can afford. And I want to identify what cell I'm going to change in order to meet that number. Well the cell that I'm interested in changing is the B3, my interest rate, because I'm not quite sure what my interest rate should be. So I put in B3. So basically, we're telling it to set this cell here, B4, where I have my formula, give it the value that you're looking at, and change up this cell here in order to get it for you.

Let's click the OK button and see what happens. Notice that it comes up with a value of 7%. You need an interest rate of 7% on a loan of this size, over this amount of time, in order for your payments to be $900 a month. That was pretty quick. Goal Seeking with cell B4 found a solution. Your target value was -$900 a month, that's what you want to pay, and it would have to get an interest rate of 7%. Now that's too bad in today's environment, but I may want it to be a little bit less, so let's try that one more time.

I'm going to go back up to my What-If analysis. I'm going to go select Goal Seek. I'm going to still set that same final number, B4. This time I'm going to make it $ 600, $600 is what I want to pay. And I'm going to still try to change up my interest rates, and then click it off. Now, it's looking at it here and it's telling me that it only needs an interest rate a 1% in order to be able to pay that off. That looks pretty cool but I don't know if I'll ever be that lucky to get an interest rate of only 1%. But you can see here that the power of this What-If analysis allows you to do many, many calculations, very quickly, in order to find out where you're values are that you need.

So keep this particular formula in mind in the future, when you want a use the power of Excel to save you time doing mathematical calculations.

Find answers to the most frequently asked questions about Excel 2007 Essential Training.


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Q: When trying to apply the techniques from the “Relative and absolute referencing” video to a worksheet other than the exercise file included with the title, the formulas did not work for the entire worksheet. The formulas would only work when going through the worksheet row by row. What could be causing this to happen?
A: When trying to apply formulas to a whole workshee, here is a tip to try:

If you want to always refer to the same cell then use an absolute reference. For example, always pulling the value from cell A3 would be referenced as $A$3. This will never change no matter where you copy it to in the spreadsheet.

 If you want to reuse the same formula, but with values in different cells,  use the relative reference, A3. This way formula =A3*B3 will become =A4*B4 as you copy it down a column.
Q: In the chapter 7 video "Sorting and Grouping" at approximately 4:05, the author says to go to cell 5 on the worksheet and click on Subtotal to subtotal the grouping. My screen will not allow me to click on the Subtotal option at the top of the page. Is this an issue with my version of Excel?
A: It seems that there is an error in the instructions in this video. The video should have instructed users to do the subtotaling first, then create the table.
Q: Where can I learn more about Excel formulas?
A: Discover more on this topic by visiting Excel formulas on lynda.com.
 
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