I have an excel spreadsheet with a list of values, column A contains the grading, column B contains the number of occurrences:
A | B
---------------
Grading | Count
1 | 1
2 | 1
3 | 2
4 | 3
5 | 5
I would like to find the average grading based on the count but to do this I need to build a list based on these values, I.E. the above chart should translate into:
=AVERAGE(1,2,3,3,4,4,4,5,5,5,5,5).
I have managed to come to a solution through a very convoluted method of creating a new table, using IF and COUNTIF to print out an array and then AVERAGE the entire range but this is time consuming to repeat and I'm sure there is much simpler way of doing this.
If I'm not mistaken, you can just take the sum of product of columns A and B, then divide by the sum of the Count column:
=SUMPRODUCT(A2:A6, B2:B6) / SUM(B2:B6)
Note that using your hand written expanded formula yielded the same results:
=AVERAGE(1,2,3,3,4,4,4,5,5,5,5,5)
Related
I'm trying to get the average of four data points.
The problem is that one or more data points could be missing.
The average should be the average of the last four mondays or four last tuesdays etc.
Each data point is about 1000 rows apart so my idea was to "list" the dates needed and use vlookup and average.
Generic formula
// I only add two dates, but the same formula is repeated for four dates
=AVERAGE(VLOOKUP(DATE_1;Table;25;FALSE);VLOOKUP(DATE_2;Table;25;FALSE))
The DATE_1 and DATE_2 is dynamic calculations of the previous two, lets say mondays.
This works if all dates are there, but if one monday is missing VLOOKUP returns an error and the error can't be calculated as an average.
I figured I could wrap VLOOKUP with IFERROR, but I can't get that working either
// for simplicity I removed the average and only show one.
IFERROR(VLOOKUP(DATE_1;Table;25;FALSE);"") // returns empty string, can't calculate
IFERROR(VLOOKUP(DATE_1;Table;25;FALSE);0) // Works, but it skews the result with a zero.
I know AVERAGE skips empty cells, but how can I "emulate" a empty cell. "" is empty string and that is not the same.
Is there formula that can handle errors and still give me the average, or a formula that returns "empty cell"?
This is the whole point of the AGGREGATE function.
Instead of AVERAGE(SomeRange), use AGGREGATE(1, 6, SomeRange). Instead of AVERAGE(Value1, Value2), use AGGREGATE(1, 6, Value1, Value2)
The 1 tells AGGREGATE to calculate the AVERAGE, and the 6 tells it "Ignore error values". A full list of the values is at the bottom of this post
=AGGREGATE(1,6,VLOOKUP(DATE_1;Table;25;FALSE);VLOOKUP(DATE_2;Table;25;FALSE))
(As people have pointed out, this doesn't quite work properly without interim calculation cells - when you use a Formula in the function, Excel refuses to accept it in Reference Form)
Reference form: AGGREGATE(function_num, options, ref1, [ref2], …)
Array form: AGGREGATE(function_num, options, array, [k])
Function_num | Function
1 | AVERAGE
2 | COUNT
3 | COUNTA
4 | MAX
5 | MIN
6 | PRODUCT
7 | STDEV.S
8 | STDEV.P
9 | SUM
10 | VAR.S
11 | VAR.P
12 | MEDIAN
13 | MODE.SNGL
14 | LARGE
15 | SMALL
16 | PERCENTILE.INC
17 | QUARTILE.INC
18 | PERCENTILE.EXC
19 | QUARTILE.EXC
Option | Behaviour
0 | Ignore nested SUBTOTAL and AGGREGATE functions
1 | Ignore hidden rows, nested SUBTOTAL and AGGREGATE functions
2 | Ignore error values, nested SUBTOTAL and AGGREGATE functions
3 | Ignore hidden rows, error values, nested SUBTOTAL and AGGREGATE functions
4 | Ignore nothing
5 | Ignore hidden rows
6 | Ignore error values
7 | Ignore hidden rows and error values
Just giving you a different approach even though it is not exactly the same way as your question is going, I just thought to share how i've solved a similar issue.
No lookup table in this one, I personnally try to avoid these in these situations, as you always have to update them given some conditions.
{=AVERAGE(IF((WEEKDAY(A1:A276,2)=1)*((L1:L276)>0)*((A1:A276)>((TODAY())-29)),L1:L276,""))}
array formula, so ctrl+shift+enter
(WEEKDAY(A1:A276,2)=1) tests if it's a monday
(L1:L276)>0) is where I have values and therefore want to ignore zeros
((A1:A276)>((TODAY())-29)) added this one for you to check if it's less than 4 weeks old
if these conditions are fulfilled the respective value in L:L is take for the average (A:A being the date in this example)
Here's one more solution for you to try (array formula - Ctrl+Shift+Enter):
=AVERAGE(IF(ISNUMBER(MATCH($A$1:$A$10,CHOOSE({1,2,3,4},DATE_1,DATE_2,DATE_3,DATE_4),0)),$B$1:$B$10))
Result:
INDEX & MATCH doesn't produce the same problem, try this:
=AVERAGE(INDEX(YourColumnRange;MATCH(DATE_1;Table));INDEX(YourColumnRange;MATCH(DATE_2;Table)))
EDIT: To match your dataset you can manually calculate an average like this:
=SUM(IFERROR(INDEX(Y:Y,MATCH(Date_1,A:A,0)),0), IFERROR(INDEX(Y:Y,MATCH(Date_2,A:A,0)),0))/
COUNT(INDEX(Y:Y,MATCH(Date_1,A:A,0)), INDEX(Y:Y,MATCH(Date_2,A:A,0)))
This will allow you to skip empty rows. The formula is simplified for a generic case to make it easier to read.
I currently have two columns that look like this:
value | condition
50 | Y
60 | N
30 | Y
10 | Y
I cant seem to make use of IF function to get a sum of all the rows. Basically the aim here is to only sum the values if condition is Y and display the total in a cell. And if condition column is N, it will see value as 0. I want to be able to do this without the need of creating an additional column even though I understand this is easily done with a brand new column.
as Nick mentioned, you can use Sumif:
A | B
1 value | condition
2 50 | Y
3 60 | N
4 30 | Y
5 10 | Y
sumif structure:
=sumif(Range, Criteria, Sum_Range)
sumif for table above:
=sumif(B2:B5,"Y",A2:A5)
Excel formulas are not case-sensitive and there is no difference between A1:A5 and A2:A5 because the table titles are not important but start row and end row is important in both Range and Sum_Range.
I am trying to write a formula in Excel which will count how many times we have sold less than 50 of a particular product. For example, here is a day's sales:
Order | Product | Qty
1 | A | 5
2 | A | 5
3 | A | 5
4 | B | 30
5 | C | 75
I want a formula in a cell which says how many times we have a requirement for less than 50 of a certain product. So in the example above, there is a total of 15 As, 30 Bs and 75 Cs, so 2 of those are less than 50.
I think it will need to be an array function of COUNTIF and SUM, but can't figure it out.
You could use this formula:
=SUMPRODUCT(--(IF(ROW($B$2:$B$10)=MATCH($B$2:$B$10,$B$1:$B$10,0),SUMIF($B$2:$B$10,$B$2:$B$10,$C$2:$C$10),"")<50))
Note: It's an array formula and must be entered through Ctrl+Shift+Enter
Product order placement can be randomized and does not have to be in order.
Another way
=SUMPRODUCT((SUMIF(B2:B10,B2:B10,C2:C10)<50)/COUNTIF(B2:B10,B2:B10))
Maybe something like that will help:
=SUMPRODUCT(--IF($B$2:$B$11<>$B$1:$B$10,SUMIF($B$2:$B$11,$B$2:$B$11,$C$2:$C$11)<50,0))
Note that this is an array formula so needs to be entered with Ctrl+Shift+Enter. Data needs to be sorted by Product (i.e. product A cannot appear in random rows, like row 2, 20 and 100; it needs to be grouped together).
Result:
I am creating a World Cup spreadsheet.
Example:
Team | Pts |
Brazil | XXX |
Switz. | XXX |
C. Rica| XXX |
Serbia | XXX |
I have another table which displays the Country, Score & whether it was a W (win), L (loss) or T (tie). A WIN will add 3 points, a TIE will add 1 point & a LOSS will add 0 points. Where I put the XXX, I want a formula that will search the table column for the Country Name and ADD up the W's, L's & T's and display the sum of every game there team played with the point system I mentioned.
Any help would be greatly appreciated! Thanks.
Try,
=SUM(COUNTIFS(D:D, A2, E:E, {"T","W","W","W"}))
You can use COUNTIFS. I set up a mock table to demonstrate:
The first COUNTIFS will count a given teams wins, and then multiple by a factor of 3.
The second COUNTIFS will count a given teams ties (no need to multiply here).
Since a Loss equates to 0 points, there is no need to sum or count anything.
Adjust ranges to fit your setup and then auto-fill the equation down your table to calculate for each team.
You can use a formula in H2, as below, and drag down as many rows as required
=(3*SUMPRODUCT(--($A$2:$A$13=$G2),--($C$2:$C$13="W"))+SUMPRODUCT(--($A$2:$A$13=$G2),--($C$2:$C$13="T")))
Data:
You only care about Wins or Ties. So count the wins per country and * 3 and add to that the count of ties, which you don't need to multiply as is 1.
Sumproduct is used to handle the arrays nicely.
I have over 100k rows of data like below:
ALLA,ALLA,"Company1, Inc.","Company1, Inc.",PSA,PSA,1,1,FALSE,FALSE
BCCO,BCCO,"Company2, Inc.","Company2, Inc.",PSB,PSB,1,1,FALSE,FALSE
CTTP,CTTP,"Company3, Inc.","Company3, Inc.",PSC,PSC,1,1,FALSE,FALSE
CMMZ,CMMZ,"Company4, Inc.","Company4, Inc.",PSD,PSD,1,1,FALSE,FALSE
I want to know how to figure if data in column 1 is the same as column 2, column 3 as column 4 and so on. How could I do that in excel?
Following Cory's formula, I found that I can compare whole columns using:
=if(A:A=B:B, "yay", "aww")
Problem is I have a header in the file:
c - symbol, symbol, c - companyname, companyname, c - tradingvenue, tradingvenue, c - tierrank, tierrank, c - iscaveatemptor, iscaveatemptor
Shouldn't this cause A:A=B:B to be false?
Given this:
| A | B |
---+-----+-----+
1 | X | X |
---+-----+-----+
2 | Y | Y |
---+-----+-----+
3 | Z | Z |
The formula =SUMPRODUCT(--(A1:A3=B1:B3)) will tell you how many times the A value matches the B value.
You should get 3 as a result here. If, for example, you change B3 to Q then it will give you 2.
To do this on two columns without specifying the end of the range, try:
=SUMPRODUCT(--(A:A=B:B),--(LEN(A:A)>0))
I've been using Excel since 1991, and unless you want to write a VB macro, I think the best way is to do the simple IF statement suggested in the comments. If you need to test several columns at once, which is what your question suggests, then I'd do
=IF(AND(A1=B1,C1=D1,E1=F1,G1=H1),0,1)
Fill that formula down the column and then you'll be able toinstantly count the number of rows that don't matchwith a data-filter, select all the rows which have a '1', so you'll be able to examine the rows that don't match