I have a list of foretasted data pasted as values, I would like to continue to produce forecasts in the same format but do not have the formula to how the originals was created.
I am trying to recreate the current forecasts as to prove the working formula, but cant seem to find the correct algorithm. I have tried multiple logical formats from using average, averageifs, forecast, trend and of all different relevant date ranges and cannot reproduce the original or anywhere near.
The data set it too large and sensitive to post here but please see example of data format below:
Date Actual Forecast #Data goes back up to 3 years
19/06/19 121 138
18/06/19 110 116
17/06/19 129 124
I would like the calculation method used for example receiving 19/06/19 Forecast from the past data of Actual column.
I am unsure whether VBA could be used to cycle through possible options as I have never had to do anything like this before? Hopefully someone with more experience than me may have a more of an idea.
Thanks in advance for any help or advice.
Related
It's my first question here. I need a formula which take the correct code at specific date. After taking correct code, excel table is using it for calculation of the correct value.
The concept is a little complicated. There is a calendar which is starting at 15.09.2021 (V3 Cell) and ending at 04.06.2022(JX3 Cell). And our codes are: ITB, OR, TBE, CBE, PO, VDR, SMF, FMF and DS. All of them are the steps of procurement process. And each of them has a specific values/coefficients like 0.1, 0.2, 0.15 etc and everyone comes true at specific date. And their locations are L2 to T2.
For example, we are taking the codes for procurement of generator at 15 September 2021:
=IF(V$3=$L5;$L$2;IF(V$3=$M5;$M$2;IF(V$3=$N5;$N$2;IF(V$3=$O5;$O$2;IF(V$3=$P5;$P$2;IF(V$3=$T5;$T$2;IF(V$3=$S5;$S$2;IF(V$3=$R5;$R$2;IF(V$3=$Q5;$Q$2;0)))))))))
L5 to T5 are the dates of procurement steps of that item.
And we are using same formula for other dates. It is working. But when, for example TBE and CBE completed at the same day, excel takes one of them (which is first). Sometimes 4-5 steps are completing at the same day. And for this situation, we can not take the true value of the item's procurement. We are calculating the progress of the procurement in that way. But as I said, it isn't working for the same dates. I tried to fix the formula by putting all possible combinations and giving them new code and coeffient:
=IF(AND(V$3=L5;V$3=M5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5;V$3=R5;V$3=S5;V$3=T5);$U$117;IF(AND(V$3=L5;V$3=M5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5;V$3=R5;V$3=S5);$U$118;IF(AND(V$3=L5;V$3=M5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5;V$3=R5);$U$119;IF(AND(V$3=L5;V$3=M5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5);$U$120;IF(AND(V$3=L5;V$3=M5;V$3=N5;V$3=O5;V$3=P5);$U$121;IF(AND(V$3=L5;V$3=M5;V$3=N5;V$3=O5);$U$122;IF(AND(V$3=L5;V$3=M5;V$3=N5);$U$123;IF(AND(V$3=L5;V$3=M5);$U$124;IF(AND(V$3=M5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5;V$3=R5;V$3=S5;V$3=T5);$U$125;IF(AND(V$3=M5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5;V$3=R5;V$3=S5);$U$126;IF(AND(V$3=M5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5;V$3=R5);$U$127;IF(AND(V$3=M5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5);$U$128;IF(AND(V$3=M5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5);$U$129;IF(AND(V$3=M5;V$3=N5;V$3=O5;V$3=P5);$U$130;IF(AND(V$3=M5;V$3=N5;V$3=O5);$U$131;IF(AND(V$3=R5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5;V$3=S5;V$3=T5);$U$132;IF(AND(V$3=R5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5;V$3=S5);$U$133;IF(AND(V$3=R5;V$3=N5;V$3=O5;V$3=P5;V$3=Q5);$U$134;IF(AND(V$3=N5;V$3=O5;V$3=P5);$U$136;IF(V$3=$L5;$L$2;IF(V$3=$M5;$M$2;IF(V$3=$N5;$N$2;IF(V$3=$O5;$O$2;IF(V$3=$P5;$P$2;IF(V$3=$T5;$T$2;IF(V$3=$S5;$S$2;IF(V$3=$R5;$R$2;IF(V$3=$Q5;$Q$2;0))))))))))))))))))))))))))))
New codes are at U117 to u152.
As it can be seen, it is so rough method to use. I tried to put every possible combination but also there is a character limit and i can't write all of them too.
I hope I could explain the problem well. Maybe it can be solved by VBA too.
I'll be glad if anyone helps for practical methods. Thanks.
The problem statement that I am currently working on has data available for 27 customers and the purchase amount they have transacted on (in total) for each month in 2021 from Jan until Sept. The data looks like the attached image with this question/post.
sample dataset
I could simply use average to find the next value but that'd not be precise to a very good extent, but then, in absence of any other data or features/columns, is that the only way to solve this question, or are there any other methods anyone can suggest? Note, both Excel &/or Python examples are fine.
Additional Note: I have already tried FORECAST functions in Excel, but I am not sure if the outcome is correct or not, since Microsoft documentation merely provides the formula by means of which this function performs the calculations. Overall there are 5 total types of FORECAST(.**) functions that Excel provides, but the documentation is poor, hence tomorrow, if I want to write the same solution in Python or any other programming language.
Taking a cursory glance at the data, there's a complexity that I'm missing like seasonality, trend, noise, outliers, etc., but let's just assume that this data is a simple trend line for each client.
From a purely high-level, excel can do a simple FORECAST.ETS(target_date, values, timeline, [seasonality], [data_completion], [aggregation]) formula.
It can be streamlined with excel's built in data tool Forecast Sheet.
I could talk about Python but that's a little more hands on with a time series forecast.
Need help with a Excel formula.
I have two sets of data in two tables, with the same number of columns and rows.
One table has data for male, the other one for female.
Each table has a common definer (age). All the other data are different. All data are in numbers. Some are negative.
I aim to use a single cell to get a result coefficient used by a specific equation, and I need to channel the input data by two criteria. One is gender, the other one is age. I am trying the IF AND formula, but it is not working.
Here is an example.
age (D2) coefficient (D2-D4)
Table Female.
18-30 yrs 25
30-60 yrs 35
60-70 yrs 41
So here is the data to process:
D1 F
D2 29
D3 115
(MEANING Gender - female; age 29; weight 115 pounds)
I was trying the IF AND formula
=IF(AND(D1="F";D2>17;D2<30);(D3+H2);IF(AND(D2>=30;D2<60);(D3+H4)))
Now, this works fine when I only calculate the female data, but I can't seem the find the way to include the formula to choose from the MALE table, if the subject is male ("M").
Any help or clues on how to resolve this?
Welcome to stackoverflow. It would be easy to help you if you paste a screenshot of your table etc as it would make us understand your problem clearly.
Anyway, two solution advice from me:
1- you can use nested if operators but not like yours. Before expressing conditions with and operator, add another if to start processing data related to females. Like this: =IF(D1="F";IF(AND(D2>17;D2<30);(D3+H2);IF(AND(D2>=30;D2<60);(D3+H4))).
After processing females, add the same formula strings this time for males. This will solve your puzzle I guess.
2- my second advice would be creating a user-defined function. I often create a user-defined function if my formula gets too long and become hard to read. I strongly recommend you to search for this as it will make you better-understand the logics in excel functions and make you equipped against your puzzles in future.
I keep a running avg of kids grades in Excel over a 2 week period. The way i have the code now
AVERAGE(OFFSET('1'!E4,COUNTA('1'!D:D)-29,):OFFSET('1'!E4,COUNTA('1'!D:D),))
it returns an error if i don't have 2 weeks of data. I found a way around this by doing this
=IFERROR(AVERAGE(OFFSET('1'!E4,COUNTA('1'!D:D)-29,):OFFSET('1'!E4,COUNTA('1'!D:D),)),IFERROR(AVERAGE(OFFSET('1'!E4,COUNTA('1'!D:D)-28,):OFFSET('1'!E4,COUNTA('1'!D:D),)),IFERROR(AVERAGE(OFFSET('1'!E4,COUNTA('1'!D:D)-27,....
Im Sure there is a better way to do this any help would be appreciated.
As pointed out in the comments - it's difficult to give a definitive answer without some more knowledge - it's not easy to tell, for instance, where the numeric data starts (E4 or E5)?
Firstly you can simplify your original formula which appears to AVERAGE the last 30 rows of data (not sure how 30 rows equates to 2 weeks of data) - you can do that with just:
=AVERAGE(OFFSET('1'!E4,COUNTA('1'!D:D)-29,0,30))
Now I assume the error comes about when COUNTA('1'!D:D) is < 29 so you can simply add an If function which AVERAGES all the data if that function returns a number < 29, i.e.
=IF(COUNTA('1'!D:D)<29,AVERAGE('1'!E4:E33),AVERAGE(OFFSET('1'!E4,COUNTA('1'!D:D)-29,0,30)))
That formula may need some small adjustments to cater for the specifics of your layout but the general approach is valid
I've got a spreadsheet (Office 2007 version of Excel) full of text entries that are negative time values, example "-0:07" as in an employee took 7 mins less to complete a job than expected. I need to perform mathematical calculations on these entries and am looking for a more elegant formula/method than I've come up with so far.
I know about 1904 date system and * or / by 24 to convert back and forth, the problem is getting a formula that will recognize the text entry as a negative time value.
I've tried value(), *1, which both work on the text fields if the number is positive, but the "-" seems to mess those up. Even paste-special/add fails to recognize these as numbers.
Here's what I came up with that gets the job done, but it's just so ugly to me:
=IF(LEFT(E5,1)="-",((VALUE(RIGHT(E5,LEN(E5)-1)))*-1.0),VALUE(E5))
Obviously my text entry is in cell E5 in this example.
This works, so I'm not desperate for a solution, but for educational purposes (and smaller code) I'd like to know if there's a better way to this. Does anyone have a suggestion for something shorter, easier?
Thanks.
P.S. - an interesting tidbit here, I use Excel at work, but not at home, so I uploaded a sample spreadsheet to Google Docs, and it actually handles the Value() command on those entries properly. Weird, huh?
Thanks again for any suggestions.
Excel doesn't handle time spans in cells. It only deals with time. When you do "00:07" it is then converted to 0.0048611 which is the same as Jan 1st 1900 12.07 am. So if you did 2 minutes minus 7 minutes it would give at best 11.55pm.
The way you do it is the only way.