sum up hours at specific row in excel - excel

I am trying to find a formula to sum up some specific working hours.
From the first two sheets people can track when they work on a specific ID(Project) So you see that Lukas worked on ID 2 and Chinaedu on ID 5 on two different days.
In this sheet the working time on an ID should be calculated automatically just by putting the ID in the first column. That means that when you put an ID into the cell on the sheet UserStories, Excel should look for exactly this ID in column P of the other sheets and return the estimated time in sum and the date. Has anybody an idea which could help me along? Thanks in advance!

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Excel - How to sum values for specific days

How can I sum all the OT(hr) value only for specific day?
Requirement: I need to sum all the OT(hr) for one person for Sunday only. One person means one row in the table.
I tried this few code but it doesn't work :
=sumif(WEEKDAY(1,1),O8:AD8) or
=SUMIF(O8:AD8,TEXT(O6:AD6,"dddd")="Sunday")
Thank you so much
In my example, I don't use merged cells. I wouldn't recommend having merged cells for the date. Date must be above the OT (hr). And the Ot (hr) you also need to put into the formula.
This formula was working for me:
=SUM((WEEKDAY(O2:AD2;1)=1)*(O3:AD3="OT (hr)")*(O4:AD4))

Using Countifs to count Value by Month

I am trying to count the number of issues that we have per month, e.g., how many products are off condition in January, February, etc. These two are in a different sheet (sheet 1 = data, sheet 2 - trending). I used =COUNTIF(Data!F:F, "Off Condition") but this doesn't include month and only gives total issues for whole timeline.
Now I need the excel to automatically generate data or number of how many issues I have when I start to fill the form and add the issues. For 1 issue that we face, I'll fill all column in one row in Sheet 1, so Sheet 2 should be automatically filled with data from Column A and Column F.
Please help. Thank You so much in advance.
I used =COUNTIF(Data!F:F, "Off Condition") but this doesn't include month and only gives total issues for whole timeline.
The COUNIFS function supports multiple parameters.
=COUNTIFS(Data!F:F,"Off Condition",Data!G:G,"January")

Filtering or Importing data for specific date

I was wondering if anyone knows if it's possible to import a data, in a sort of a COUNTIF function but only for the data dated today?
I have 2 sheets, Attendance and Department.
In the Department tab, I have a list of employee's in column A. In column B and so on, I have a drop down option to select which department they're are stationed for each day. Each column represent a day, B being the 1st, C being 2nd, ... and so on. The header for each column has the day for the day as well.
On the attendance sheet, I have the list of Department in column A and in B, it is used to record how many employee are stationed at that department. I also have the day for the day on this sheet on A1.
Is it possible that when I change the date, the number of employee stationed in each department will change according to the date?
Is it possible to do this with just functions?
I've tried using the COUNTIF function, but I've found that I will have to change the range on a daily basis.
Use The Function: in B4 of Attendance Tab
=COUNTIF(INDIRECT("Department!" &ADDRESS(3,MATCH($A$1,Department!$A$2:$P$2,0)) & ":" &ADDRESS(6,MATCH($A$1,Department!$A$2:$P$2,0))),$A4)
Results: Attendance Tab
Department Tab:
I have used all the references as in the screenshots, you can change them if they are different in your sheet.
your question can be solved by SUMPRODUCT function. See below solution picture:
SOLUTION
Just to quickly explain my solution, I gave a name to the date on the Department sheet, called it 'Date_Lookup'; and I gave a name to the dates on the Attendance sheet, called it 'Date_List'. Names will simplify my formula especially when referencing across worksheets.
You will eventually find a lot of COUNIF scenario can be solved by SUMPRODUCT and this is just one example. SUMPRODUCT can do a lot IFs than COUNTIFS can do. In your case there are two criteria, one is which department did an employee attend to, and the other is on which date did the employee attend to that particular department. So my SUMPRODUCT formula can be understood as:
=SUMPRODUCT(('from the list of dates'='the particular date I want to see')*('from the full attendance record'='how many employees went to the given department'))
Let me know if you have difficulties understand my answer. A good 1 hour read through some online articles regarding SUMPRODUCT will help.
Cheers :)
Your first step would be to use a function to work out in which column the entered date appears. So in your Department sheet you enter a date in A1, then set B1 to:
=IFERROR(MATCH(A1, Attendance!2:2, 0), 0)
I use the IFERROR as I don't like seeing errors on my sheet. Assuming the result isn't zero, use a COUNTIF looking for the department letter in a range in the result column. I'd simply use on OFFSET to get the right range, but sticklers would tell you to find a different way of doing it. So long as your spreadsheet isn't going to increase in size to a massive complexity, OFFSET is fine.

SUMIFS with Date Range...but X days before and X days after

I am trying to create a SUMIFS function that is adding totals based on several parameters. The final parameter is to use a date in a column and then look for any dates 7 days prior and 7 days after.
I have a list of invoices I am trying to sum up based on travel...conceivably people who are traveling will travel in a short duration. I cant add all invoices up because someone might travel at the beginning of the month and at the end, creating 2 trips.
Lets say the date is in Column I and my criteria cell is I10, I tried to enter the Criteria Range as "(I10-7)=>I10<=(I10+7)"
But this is clearly wrong. Any help is appreciated!
Try,
=sumifs(A:A, I:I, ">="&I10-7, I:I, "<="&I10+7)
Add your other criteria pairs making sure that the criteria ranges are the same number of rows as the sum range.

How do I count how many occurrences per week something happens excel?

I am looking at a rather large excel spreadsheet with a long list of dates on it. Each one of these dates marks an error. What I am trying to find out is how many errors occur per week? From there I hope to make a control chart. Thanks so much and please let me know if there are any additional details I need to provide.
Just Like TMH8885 metioned get week number from each date and then assuming that your dates are in Column A and weeknumbers are in column B make a table that list numbers from 1 to 52 next to which enter a COUNTIF(B:B,D2)(change D2 to cell pointing at correct week number of course).
In the screen shot I was lazy and included only 22 weeks for my table.
You could use the WEEKNUM function to pull which week of the year the error occurred in.
=WEEKNUM(your date cell)
From there you could use a pivot table to pull in the weeks then find the average count of errors.

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