This post is authored by Martin, one of our readers.
Situation:
Sometimes I encounter data in my tables with blank cells where there is a repeated value from the cell directly above. See below:
This can be annoying when it comes to interpreting the data and when sorting columns.
Solution:
Here’s the solution I use.
1. Select the whole table. I favor the shortcut Ctrl A to do this. Make sure you perform this shortcut from within the table though as otherwise the entire worksheet with be selected. This gives us Figure 2:
2. Next we will open the Go To dialog box. This is a very useful dialog for selecting certain types of cells, for example cells containing formulas, constant values, visible cells and so on. F5 or Ctrl G both work as keyboard shortcuts.
3. Click the Special button (see Figure 3)
4. In the next screen select Blanks.
5. Click OK and notice that all blank cells are now highlighted in the table (Figure 5). Notice too, the position of the active cell. This is the one un-shaded cell in this selection. In this example it is cell D3. If the table were fully complete this cell would show the same value as the cell above it – cell D2 – the word Office.
6. Next we will use the fact that cell references in Excel by default behave in a relative manner. That means when you copy a formula to another cell, the cell reference in the formula change relative to the location in the worksheet it has been moved to unless they have been made absolute.
7. Without clicking any of the cells in the data, simply enter the following simple formula:
=D2
If you are following along here with a different table, then you will substitute the cell reference of the cell directly above your active cell. (Figure 6)
8. Next the important part. We need to copy this simple formula to all the other blank cells which could number in the hundreds or thousands or greater still. How do we do it?
Simply by using one of the best keyboard shortcuts I know in Excel: Ctrl & Enter.
This shortcut when used in a single cell will enter the value inputted into the cell and keep that cell active, instead of performing a carriage return to the next row.
But, when used over a range of cells, Ctrl & Enter together will copy the value of the active cell into all cells in the selection.
In this case, we are not going to copy the value of D2 into all blank cells, but the relative cell that appears over each blank cell. In cell D3’s case this was D2. In A3’s case for example it is A2 and so on.
After CTRL Entering the formula the worksheet now looks like:
9. There is one last important step. These pasted valued are, as we have seen, relative formulas. If I were to change the sort order in one of the columns, for example to identify which Cost in column E is the highest, my table would be completed distorted as the formulas in the changing rows are all retrieving the value in the cell above. See Figure 8.
I’ll Undo my flawed Sort by clicking Ctrl Z.
The final step therefore is to change these formulas into constants so that this type of problem can be avoided.
To do this, select the table, (or if the formula cells remain highlighted, you won’t need to select the table at all).
Now copy your selection with Ctrl C.
Next, perform a Paste Special / Values to replace the formulas with their constant equivalents – Figure 9.
And that’s it!
Thank you Martin
Many thanks to Martin for sharing this simple yet very beautiful trick with all of us. If you enjoyed this article, say thanks to Martin.
How do you deal with Blank Cells
Barking dogs, bad bosses and blank cells are everywhere. I am eager to know how you deal with them. Please share your tips & techniques with us using comments.
More on Blank Cells and other Unclean Data
If you constantly deal with blank cells or other types of unclean data, read these articles to learn few more tricks.
12 Responses to “29 Excel Formula Tips for all Occasions [and proof that PHD readers truly rock]”
Some great contributions here.
Gotta love the Friday 13th formula 😀
Great tips from you all! Thanks a lot for sharing! bsamson, particularly you helped me on a terribly annoying task. 🙂
(BTW, Chandoo, it's not exactly "Find if a range is normally distributed" what my suggestion does. It checks if two proportions are statistically different. I probably gave you a bad explanation on twitter, but it'd be probably better if you fix it here... 🙂 )
Great compilation Chandoo
For the "Clean your text before you lookup"
=VLOOKUP(CLEAN(TRIM(E20)),F5:G18,2,0)
I would like to share a method to convert a number-stored-as-text before you lookup:
=VLOOKUP(E20+0,F5:G18,2,0)
@Peder, yeah, I loved that formula
@Aires: Sorry, I misunderstood your formula. Corrected the heading now.
@John.. that is a cool tip.
Hey Chandoo,
That p-value formula is really great for a statistics person like me.
What a p-value essentially is, is the probability that the results obtained from a statistical test aren't valid. So for example, if my p value is .05, there's a 5% probability that my results are wrong.
You can play with this if you install the Data Analysis Toolpak (which will perform some statistical tests for you AND provide the P Value.)
Let's say for example I've got two weeks of data (separated into columns) with the number of hours worked per day. I want to find out if the total number of hours I worked in week two were really all the different than week one.
Week1 Week2
10 11
12 9
9 10
7 8
5 8
Go to Data > Data Analysis > T-Test Assuming Unequal Variances > OK
In the Variable 1 Box, select the range of data for week 1.
In the Variable 2 Box, select the range of data for week 2.
Check "Labels"
In the Alpha box, select a value (in percentage terms) for how tolerant you are of error.
.05 is the general standard; that is to say I am willing to accept a 95% level of confidence that my result is accuarate.
Select a range output.
Excel calculates a number of results: Average (mean) for each week's data, etc.
You'll notice however that there are two P Values; one-tail and two-tail. (one tail tests are for > or .05), the number of hours I worked in week two is statistically equivalent to the number of hours I worked in week one.
So here’s a way you might want to use this. You put up a new entry on your blog. You think it’s the best entry ever! So you pull your webstats for this week and compare it to last week. You gather data for each week on the length of time a visitor spends on your website. The question you’re trying to prove statistically is whether there’s an average increase in the amount of time spent on your website this week as compared to last week (as a result of your fancy new blog post). You can run the same statistical test I illustrated above to find out. Incidentally, it matters very little to the stat test whether the quantity of visitors differs or not.
Anyhow, the Data Analysis toolpack doesn't perform a lot of stat tests that folks like me would like to have access to. In those cases I have to either use different software, or write some very complicated mathematical formulas. Having this p-value formula makes my life a LOT easier!
Thanks!
Eric~
Fantastic stuf..One line explanation is cool.
Thanks to all the contributors
OS
Take FirstName, MI, LastName in access (you can fix it to work in excel) capitalize first letter of each and lowercase the rest and add ". " if MI exists then same for last name:
Full Name: Format(Left([FirstName],1),">") & Format(Right([FirstName]),Len([FirstName])-1),"") & ". ","") & Format(Left([LastName],1),">") & Format(Right([LastName],Len([LastName])-1),"<")
I teach excel, access, etc etc for a living and i have my access students build this formula one step at a time from the inside out to show how formulas can be made even if it looks complicated. Yes I know I could just do IsNull([MI]) and reverse the order in the Iif() function but the point here is to nest as many functions as possible one by one (also I illustrate how it will fail without the Not() as it is)
Extract the month from a date
The easiest formula for this is =MONTH(a1)
It will return a 1 for January, 2 for February etc.
if in a column we write the value of total person for eg. 10 if we spent 1.33 paise each person then how we get total amount in next column and the result will in round form plzzzzz solve my problem sir................... thank u
@Anjali
If the value 10 is in B2 and 1.33 paise is in C2 the formula in D2 could be =B2*C2
If the values are a column of values you can copy the formula down by copy/paste or drag the small black handle at the bottom right corner of cell D2
kindly share with me new forumulas.
How to convert a figure like 870.70 into 870 but 871.70 into 880 using excel formula ? Please help.