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Excel VBA Course
[80% Discount] Excel VBA Course - From Beginner to Expert

200+ Video Lessons
50+ Hours of Video
200+ Excel Guides

Become a master of VBA and Macros in Excel and learn how to automate all of your tasks in Excel with this online course. (No VBA experience required.)

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Is There Any Quick Way (pc Program) To Calculate Slope Of Curve?

Hey all,

Ok I have a problem in that i have about 58 batches of data and have a
plot of a curve for each batch. I need to calculate the slope of the
steepest part of each curve and am restricted for time! Does anyone
know of a quick way to do this without printing off each graph and
calcalating tangents! Currently my data is in excel however I could
put transer it to MATLAB or download another program you can
recommend???

Also what technique do you recommend to use to fit a curve of best fit
to the data??????

Thank you


Excel VBA Course
Excel VBA Course - From Beginner to Expert

200+ Video Lessons 50+ Hours of Instruction 200+ Excel Guides

Become a master of VBA and Macros in Excel and learn how to automate all of your tasks in Excel with this online course. (No VBA experience required.)

(80% Discount Ends Soon!)

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I want to add data points to the scatter plot that are not part of the data
ie. add points to find their concentration on a standard curve.



how can i find the coordinatres of the maximum point on a curve plotted in
excel????



How do I calculate the number of batches per hour? Here's what I have so far:

Cell B5: start time: 4:15 formatted as 4:15:00 am
Cell B6: finish time: 6:15 formatted as 6:15:00 am
Cell B7: total time: 2:00 formula in cell: =TEXT(B6-B5,"h:mm")
Cell B8: total batches processed: 22 (this is entered manually)
Cell B9: batches per hour: formula in cell: =B8/TEXT(B7,"h")

as long as I have this formula in cell B9 the answer comes out correct which should be 11 per hour.
If the formula in B9 is B8/B7, the answer is 264.0, Is this because of the way excel is reading the total time or the total time is formatted as a time, not an actual number? Is this the correct way to solve the problem?
answer should be 11 per hour.


I need a formula to calculate Turn Around Time. Find below the sample data and details for your reference.

Received Date & Time: 10/29/2010 3:27:00 PM
Completed Date & Time: 11/1/2010 3:57:32 AM
Business Hours: 08:00 AM to 05:00 PM
Non Business hours: 05:00 PM to 08:00 AM
Weekdays : Monday to Friday
Weekends: Saturday & Sunday

If I calculate TAT for this time period it should show me 1 hour 33 minutes, why because business hours are closing by 5:00 PM on 10/29 so it should not calculate duration after 5:00 PM to until 08:00 AM on next day, however 10/29 is Friday so formula should calculate the duration from 10/29 Friday 3:37 PM to 10/29 5:00 PM and again it should calculate from 8:00 AM on 11/01 Monday and formula should skip Saturday & Sunday.

In this scenario I have completed the task before 8:00 AM on 11/01 so it should show duration of 1hour 33 minutes.

Please let me know if you need any more details


Hi there

I am trying to calculate our On Time Delivery. I want this as a simple percentage of jobs. I have got this running in the following way:

Column M - Estimated Delivery dates
Column N - Actual Delivery dates
Column O - =IF(SUM(M2-N2)>0,1,0)

Then I have calculated On Time Delivery as: =SUM((SUM(O2:O252))/(COUNTA(N2:N252)))

This seems to work fine. My problem is, if we enter a date in Estimated without a corresponding Actual date, the formula for Column O fills out anyway and improves our On Time Delivery Percentage. How can I set this up so that the formula doesn't calculate if there is no data in Column N?

Any help much appreciated

Thanks,

James


Hello,

I have two columns of data: column A contains the date and time in the form dd/mm/yyyy. Column B contains a number value. All the times are in order, so column A looks like:

01/01/2007
02/01/2007
03/01/2007

I have data from 2007 to 2010. I need to calculate an average daily value (in column B) for each month, and display it in column C. So, for January, I need to calculate the average of 31 days, February, 28 days, etc.

Is there a function I can use to do this? I've been trying the AVERAGEIF formula but can't get it to work. Any ideas would be much appreciated!

Many thanks,
Caitlin


How would I create a system where an excel file is updated in real time with new values? I have a program which logs data, and I want to have excel open, plotting the data in real time. Is this possible?


I have an excel worksheet that adds two other worksheets in a data
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The cells still contain the result of the old formula referring to the
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I've seen this before, but this time, I need to calculate many
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Any ideas?

Thanks.

Don S



I have a graph with various information in it. One is a line graph that tracks hours used in that department per month. The problem is that when it gets to the last month, and there is not yet data for future months, the line goes down to Zero (leavin this big diagonal line that makes the data look funny). I need this line to stop on the last month there is data for. (I do not manually enter the data, it is a formula that I do not wish to delete.) I know I can manually move the data that the line is pulling to make it stop on the last month, but I have a graph for 36 different departments and that's a pain to have to manually adjust 36 graphs each month. Is there a way to tell the line to stop if there is no data? Thanks!!


Happy Day to all,

Can you please help me,

A1= time in
B1= time out
C1= time in
D1= time out

I want to calculate the late and under time,
Office start at 9:am w/30 mins Grace period,
The break time is one hour only, please include over breaktime in calculation.
End of office hours 6:00 pm, strickly no over time


In Excel I have been trying to find an easier way to calculate a time
difference where the times cross midnight. Example:
Start time: 23:50:00
End time: 00:15:00

How would you formulate an equation to determine the duration of time or
differnce between the start and end time?



I have a problem sometimes. I will click on a cell to add information.
The cell turns blue and then wherever I move, it highlights those to.
No matter where I go on the page. If I Alt-Tab and work in another
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I move even in those other programs (I know this sounds confusing).
When I return to excel thousands and thousands of cells are blue.


The biggest problem is that the highlighting won't turn off, no matter
what. I can't select anything from the tool bars, do any work on the sheet or close the program.
I can close it only with the task manager but when I open it again,
the cursor is still stuck in the highlighting mode and won't perform any
other functions.

Do you think this is a problem with my computer, the excel program? I have changed my mouse and this didn't help.
Is there some shortcut to turn off this highlight feature other than restarting
my computer. Which is the only current way I can get rid of it.

Thanks for any advice,


Hi Guys,
I need help....I am working production scheduling with Start and End time but there is a lunch time and tea time. Is there any formula to calculate Start time to End time with excluding lunch time?
Here is example :

Lunch time :12:00pm to 1:00pm.
Duration Process :6 hours.
Start Time (8:00am)
End time (5:00 pm)

I need a formula to calculate from Start Time 8:00am and what is the End Time? with 1 hour lunch time...

Thanks,
ET


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I'm really hoping someone can help me with this...

I need to plot percentages over time in a line graph in excel. I don't want to have to do a percentage equation in the spreadsheet, I just want excel to take two sets of values and display the percentage in the chart. For example, I need B1 as a percentage of B2 for week 1, C1 as a percentage of C2 for week 2, etc....
Can someone please offer a suggestion for how to do this? I would really appreciate it.
Also, would it be possible to link data from other sheets in the workbook into one single chart?


I have a sheet which has the start, stop and time taken for lunch breaks.

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anyone have any ideas?


I have a spreadsheet with simple (addition/subtraction) formulas. The file is quite large and the formulas are too. All of a sudden, the formulas stopped working except when I double click in the cell containing the actual formula. For example, if I enter "2" in each cell, A2 and B2, cell B3 should reflect "4" because there is a formula in cell B3 which totals cells A2 and B2. Only by double clicking on cell B3 will the program actually calculate. I'm totally perplexed and so is my IT contact. Anyone?


Hi,

I am using

ActiveSheet.ShowAllData

in a piece of VBA and it causes an error if the sheet does not have a filter applied! Is there an if statement I can use to check if the data is filtered?

Thanks - this site is an absolute life saver!

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I have a spreadsheet where I need to calculate the increase in % one year over the other in column D for Eg if Profits are 95415 in Jan 2008 (Column B) and 80215 in Jan 2008 (Column C), then the % Increase will be (95415-80215)/80215 *100

I can calculate the formula for this , but the problem comes where for eg there is a loss in Jan 2008 for -95415 and there was a profit in Jan 2007 for 80215. How do I set up formula to take negatives & positives into account in calculating the increase or decrease/

Your assistance or anybody's on the forum will be greatly appreciated

Regards

Howard

http://www.mrexcel.com/forum/showthr...ghlight=howardneed


I need information on how to enter the proper syntax (formula) so that excel
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I recently moved into a new office and I am using a brand new computer on our network. When trying to edit an existing file, I'm not able to select a single cell and type. After clicking on a cell, if I move the mouse at all (even without pressing the left button) it just continues highlighting cells no matter where I move the mouse. I am also not able to click on the tool bars at all. I have to actually Ctrl-Alt_del to get out of the program. I'm sure this is something simple, but I don't know that much about this program. Any help would be greatly appreciated.