Averaging Values For 1st And Last Two Days Of Each Month Over Span Of 100 Years
Jan 14, 2014
I've got daily water level data that spans around one hundred years. I am looking for monthly average water level data, but rather than using the whole month, I'd like to average the first two days and the last two days. I want to have a single value for each month in the 100 years of data.
If the data was smaller I could do this by hand, however having 100 years worth of data = 1200 months = so many days...
It's tough since months don't have a set number of days, and then leap years and it all gets so complicated. I've never really had a problem where date was a criteria to pull values from, and I don't know how to work with this. The internet suggest the Averageif function which I have dabbled with, but no dice.
I am looking for a formula that will tell me how many days in each month for which a given time span is active. For example the time span 1/1/2014-2/28/14. I want to know the time span is active for 31 days in January and 28 days in February. Another example: time span of 1/15/2014-2/28/2014. I want to know that the time span would be active for 16 days in January and 28 days in February. I am looking for a formula that will capture the amount of days in each month for which the time span covers. as I only know how to write a formula with multiple if statements that require a different formula for each given month, rather than one formula that applies to all months.
I have a list of people with 10 years of salary history for each (in ten consecutive columns on the spreadsheet).
I need to calculate the HIGHEST 3 consecutive year average salary for each (if they have less than 3 years with salary, then it should just average the years the do have, be it 1 or 2 years).
Here is the kicker: some people have breaks in service (for these years, there is a blank in that entry). These years should be ignored and skipped in calculating the avergaes.
So if someone had salary figures in years 1, 2, and 4, but a blank in year three, the average of years 1, 2, and 4 would constitute one three year average (whether or not it is the highest is a whole other matter...).
I have been round-and-round the best way of doing this. I was thinking of maybe creating a UDF that calculates a three average, then do it up to 8 times (one for each starting year) in 8 "helper columns", and taking the highest average.
I am developing a report that tracks the efficiency of industrial sorters on an automated assembly line. The line runs around the clock in three shifts (1: 7:30am to 3:29pm, 2: 3:30pm to 11:29pm, and 3: 11:30pm to 7:29am), and collects certain performance indicators, such as units processed. I am trying to calculate the units processed during each shift on each day. For example, if a run ran from 2:30 pm to 4:30 pm, and processed 100 units, I would want 50 units credited to shift 2 and 50 units to shift 3 (we are assuming a steady rate of processing).
My data arrives from the machine with the following columns (each run is a separate row):
B|D|E|G|H Run #| Start Date| Start Time| Units Processed | End date | End Time
I have successfully used the start time to determine the starting shift with IF statements:
=IF(--E3<0.3125,3,(IF(--E3<0.6458,1,(IF(--E3<0.9792,2,3))))) and a similar formula to calculate the end shift. This works fine if the run only spans two shifts within the same day.
My problem is that some of the runs, run across more than one shift and even across days. For example, a run that ran from 10:30 pm on one day to 4:30 pm on the next, would overlap 5 shifts and two days. I need to be able to figure out the proportion of time spent on each shift, and use that to get the proportion of units processed during each shift on each day.
I am currently thinking of a convoluted series of nested IF statements (and generating lots of columns to the right of my data for each potential shift within a run), but this seems inelegant and cumbersome. Is there a more logical way to approach this? Even more specifically, is there a function that can pair my start/end dates and times with a set of shift start/end times and calculate the elapsed time for each shift within a run? Something with MATCH or VLOOKUP maybe?
Need to create year to date sales comparing 4 years month by month. Stacked chart (Excel 2010) works OK for the first three months but adding the fourth month changes the chart to 4 series with a monthly axis. To put it another way I need a vertical axis of years and a horizontal axis of $$$ with each months sales of each year stacked on its year.
This is for a report and on "Summary Worksheet" I want to post "Current Payment" totals IF the invoices from "Tab 3" equal the "month" in G6. Say the report is for January - if there are invoices on Tab 3 -worksheet with a January date I want to post all invoice amounts on Summary worksheet under current payment.
I need to create variables that splits out a length of stay across years and enters the number of days in each of those years into separate year variables. Below are two sample cases:
After creating different variables for the different years, in this case: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, I want to be able to pull out the number of days that goes into those years as separate variables.
I recently manage to create a spreadsheet. On the spreadsheet what I am looking to do is once I change the year in cell U1 from 2010 to 2011 to automatically change the days and the date number, and where Sat and Sun preferably to auto-fill in yellow the whole column within the table as you can see in the spreadsheet.if not then just do not display Sat/Sun columns at all..
I have 2 dates and I'm looking to distribute the days between in the correct 'year' column (See below). my problem is with the units that have days that span +2 years.
One of our govt. agencies requires that I compute the 24-month rolling averages of the daily average input to a manufacturing process. In this instance, the agency is demanding the rolling average since 2003, so there are a fair number of data points involved. The process control computer can provide me the daily data (attached file contains 30 months of data), but cannot compute the 24-month rolling average.
my spreadsheet is setup with two dates: A date for when someone joins our group A date for when they are released/leave
I want to be able to see exactly how many years/months/days transpired between these two dates. I have tried lots of different formulas with no success.
I am using the following formula to calculate years months and days in Excell 2007 =DATEDIF(C7,D7,"y") & " yrs, " & DATEDIF(C7,D7,"ym") & " mths, " & DATEDIF(C7,D7,"md") & " days"
I have a start date dd/mm/yyyy, and require a formula that everytime a spreadsheet is opened, based on the current date, to calculate how many years, months and days have elasped yy mm dd since the start date...
I am looking for a formula that will return the number of months (periods) between two dates, ignoring days and years. Using the above dates, which cannot be changed, the result needs to be 63. The formulas I have tried keep returning 64 because my later date is at the end of a period, and my earlier date is at the beginning.
I have some cells which must be in the format 15/06/2007 15:25
I then need to add either days, months or years onto it.
Say the above date/time is in cell A1, when I do =YEAR(A1)+5 it displays 2012 if I choose the general cell format, but when I select the same cell format (date time) it comes out as 04/07/1905 00:00
I would like to create a monthly inventory, based on workdays (Monday - Friday)Myrna Larson has a formula that I would like to use with the workday function, but I don't know how to combine them.
I am trying to create a function where the user can type in a single month, and 2 different years, and it will calculate/compare that single month from the 2 different years entered.
For Example: I type in January, and I type in 2014 and 2013. The excel formula will spit out whether January 2014 is over/under January 2013.
See attached for my sales report. You can see where I left some space for the requested function.
as it is the last change I have to make to the sales report.
How would you calculate the amount of days of a billing period for a consulting engagement by quarter when the engagement could span multiple quarters, be within a quarter or not be in a quarter at all? Project based billing
I wanted to determine the number of days between two dates. Specifically, if the initial date is in one month, and the second is in a different month and an output would result a number of days in each month until the final date. BUT I have a large amount of data to do this for in a list view, way to put a formula in excel and just drag down the entire list to get the required information. see below for an example.
The result I'm looking for is the separate the months and only show the relevant months between the two dates in one cell or the adjacent. Something similar to the table outlined below.
Are test have some text values RA = 0 and A= 0.5 as well as numeric values. I am currently using the formula =IF(COUNTIF(A1:A13,"A"),(COUNTIF(A1:A13,"A")*0.5)+SUM(A1:A13))/COUNTA(A1:A13) which is not very good at all, but it works for this instance. I also use the formula in B2 =IF(A1="RA",0,IF(A1="A",0.5,A1)) as a helper column but I need a stabile formula with out a helper column that will allow me to average text and numeric values. In the future, they are going to expand the text values part i.e. B = 0.3, BD = 0.2 etc....
I am a teacher creating a grade book in Excel. Each student is in a single row, with columns for the various assignments. For data analysis purposes, I am trying to develop formulas to make two different calculations.
The first calculation is simply the average quiz grade for all students, for all quizzes.
The second calculation is the average quiz grade for all grades that are higher than zero. This will tell me the average quiz score for quizzes that have actually been attempted.
I do need to track students that have withdrawn from the class, so column A will contain the letter "w" if the student has withdrawn from the class. If the student has withdrawn, the grades for that student should be ignored in the calculations.
Since I do accept quizzes after their due dates, a particular quiz score will have an entry of "L" if it has not yet been taken. These entries also need to be ignored in the calculations.
See the attached workbook for some sample data and the expected results.
