# Create S Curve Based On Dates

Apr 4, 2014

I am working on Project Planning, I need to create the Progress curve for our Project based on Weight Factor every month.

I need to create the Plan and actual curve based on the dates defined in particular activities. Once the activity progress is calculated every month based on cut off date then it will sum product with corresponding WF to get the progress achieved every month. Presently I am calculating the values every month and pasting the values in Chart data every month. I had created the S Curve and attached here.

Now my objective is to automatically calculate the values for the entire cut off date at one time (From Project Start to End). i.e I don't want to do any manual work in the Chart. I will update only the actual Dates in the file, then the curves need to get automatically updated.

1) I don't want to calculate the progress for individual activities, I would like to calculate the overall progress directly.

2) When I change the Cut off date, then the previous values needs to become static.

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## Create Growth Curve

Aug 28, 2007

Does anyone know of a statistical formula that would create a normal growth curve?

For example. Let's assume that I want to forcast growth from January through December. I know that in January I will have 100 units. In December, I will have 1,000 units. Is there a formula to predict the the units in Feb-Nov (using a normal growth curve)?

## Derive Curve From Values Then Apply Curve To Another Dataset?

Jun 5, 2014

I have a data set (Set#1) that consists of a positional rank (1-240) and a dollar value (\$46-\$1) for each positional rank. It's not a straight line set.

DataSet.JPG

What I need to do is take that curve and apply it to another data set (Set#2) (1-240) and assign a dollar value (\$46-\$1) to each positional rank.

A "corner cutting" way of doing it would be an Index/Match to simply carry over the dollar value from (for example) #45 from my Set#1 to #45 in my Set#2. This could work reasonably well with data sets of the same size, but mine aren't always the same size, so I need to apply the curve itself. I

## Create New List Based On Dates

Mar 17, 2008

I am trying to create a list which will summarise information from a dataset depending on two input cells in which dates are inputted by the user. I would really appreciate it if you could have a look at the file I have attached and give me some idea as to what formulae I should be using!

It is important that the position of the output list remains where it is (as ideally I want to draw graphs using the information summarised in the output list.

If your confused now when you look at the file it should make a bit more sense.

## Create Rolling 30 Day Average Based On Dates In Heading

Apr 16, 2014

I am trying to create a rolling 30 day average based on a date in a particular cell. I have 62 columns that I am looking at. We can call A1 7/1/14 and the 62nd column 8/31/14 for simplicity sake. I want to grab 30 values in row 2 as these columns are filled in daily so 8/1/14 takes the average of 7/2/14-8/31. On 8/5, I want 7/6-8/4 so on and so forth. The average that I need has to include at least one averageif stating that only nonzero "<>0" figures should be tabulated (just have business day transaction data but need all dates listed to tabulate 30 days). The range of dates will be fixed every month and info copied to tabulate on the first day.

## Automatically Create Columns Based On Difference Between Two Dates

May 2, 2008

I have been perusing various Excel sites in hopes of finding a macro or function that can create columns based upon two dates input into specific cells. My ultimate goal is to use this macro or automated function so that when the user inputs the dates, the columns would automatically be created for them, rather than having them do it manually.

ideally, the 'start' and 'finish' dates are named cells and the macro could determine the difference between the two and automatically insert columns to the left of a ' Totals' column.

## Add To Dates Based On Criteria & Flag Overdue Dates

Dec 31, 2006

I have a very large Excel spreadsheet that is generated through an Oracle application at least once a month at work. I would like some code (either a worksheet function or a VBA) to check and report the following. If the frequency in column C is "Monthly" or "Weekly" just go to the next row. If the frequency in column C is "Annual", add 183 days to the date in column B; if it is "Semi-Annual", add 92 days to date in column B; if it is "Quarterly" , add 46 days to the date in column B; if the frequency in column C is "2-Year", add 365 days to the date in column B. Once the check has been made; I need the new total or date that was calculated checked against the date the report is being run (system clock date). If the date or total days is less than today, a new worksheet, titled "Late" needs to contain that row of data. If the date or total days is greater than today's date, just go on to the next row. I've attached an example worksheet.

## Create A Chart To Create Totals Based Upon Different Keys

Aug 7, 2006

Trying to create an excel chart to create totals based upon different keys. I
need to be able to calculate how many customers there are by Manager and then
By Rep. Then to figure out how many were New, Current, Total # of RSVP and
attended for that Rep. Below is how I have started but I am having some
problems getting certain parts. I know when I get one the rest will fall into
place. I can calculate how many total customers by manager and by rep just by
doing a Countif command but how do I determine the # of New, Current etc. Is
there a If Than command? Managers Totals are simply his reps totals.

Example..
A B C D E
F G
1 Manager Rep Customer New Biz Current # RSVP # Actual Attend

Need totals to look something like this....

A B C D E
F G
1 # of Cust # New # Current #RSVP #
Actual Attend
2 Manager
3 Rep 1
4 Rep 2

## Create Folders With Dates

Mar 2, 2008

I have a silly little sheet that i am trying to create to help me create a lot of folders on my pc. The sheet will basically make a consecutive group of folders that list out a 7 day period and a week number.

The problem i am having is trying to paste the special values of the dates in a group of cells, and then using those values to create my multiple sets of folders. I do not know how to get around it using the 5-digit date codes when it creates the folders.

## Formula For S Shape Curve?

Dec 13, 2013

I have a few dates and one Total value. I need to distribute this Total Value in such a way so I can get the same shape S curve (Date vs Value).

## Calculating The Radius Of A Curve

Feb 19, 2009

I am trying to find a formula to calculate the total size from a to b with the curve being in cluded in the total.

## Price Curve Formula

Apr 9, 2009

I'm trying Calculate Curved Price Rate by SF. phil.freestyle@gmail.com

## How Do I Calculate A Polynomial Curve Fit

Sep 7, 2009

For Excel 2007 -

I am looking for a function [or method] to calculate a polynomial curve fit. I can do it on a graph with the existing graph and chart tools, but I need to calculate it myself. Does such software exist somewhere in my Excel 2007 package, or can anyone recommend a freeware program? I am hesitant to download an unknown, un-recommended add-in.

## Calculate Area Under The Curve

Apr 13, 2008

i am getting some data via RS 232 port and plotting it straight to excel, which comes out to be in forms of waves you can say sine waves, now i need to calculate area under the curve, say like if i highlight some area it will automatically calculate the area, or if i select two points on the curve it will calculate the area. please help me out i am really stuck at this part.

## Apply A Curve To A Column

Jan 28, 2009

I'd like to apply a curve to a column of student exam grades and have the curved grades displayed in the adjacent column. Here is how I'd like to curve:

I like to make a linear function out of two coordinate pairs.

First Pair (x1,y1) = (Highest Exam Grade, 99) = (H,99)

Second Pair (x2,y2) = (Class Exam Average, Desired Exam Average) =(C,D)

Slope = (99-D)/(H-C) = m

Linear Function = Y-y = m(X-x) = Y-99=m(X-H)

Each student grade would = "Y" i.e. Y=m(X-H)+99

## Find Max In Xy Chart Curve Fit

Apr 13, 2006

How I can find a max in an xy chart curve fit?

## Calculate Best Fit Equation Of Curve

May 16, 2008

I am trying to calculate the equation of a curve which best fits some data. On the x-axis is date and y-axis the readings. The curve is quadratic, so on the chart I am fitting a 2nd order polyomial and displaying the equation. To prove that the equation the trendline gives me is reasonable, I am applying the equation on the x parameter to get the y parameter estimate and looking to see the error between predicted and actual - see attached.

The equation and the output from it are clearly rubbish, even though on the graph the trendline is a reasonable fit - see attached. Has anyone any ideas why? I think it has something to do with using a date on the x-axis but no idea why. Is there a way to correct for this? I also tried using the following I to calculate the coefficients which came up with a reasonable forecast (although linest should only be used for linear data): =LINEST(C3:C15,B3:B15^{1,2,3})

## How To Create A Calendar Which Populates By List Of Dates

Apr 1, 2009

I have been asked to create a calendar which will display, on the applicable date of expiry, a contract name. Basically so someone can go and see what contracts are due to expire. And then if a new contract comes up it will automatically be added.

I have a list of Contract names in one column followed by the expiry date.

I have looked around and there are some things which could help but they are seriously complicated and I can't work out how to apply it to my situation.

## Formula To Distribute A Value Along A Bell Curve.

Nov 19, 2008

I'm trying to find a formula that would spread out a value amongst multiple cells along a bell curve. Say I have \$x,xxx. I want to spread that amount out in a certain proportion, regardless of how many cells I'm spreading it throughout.

Say I have a \$10,000 project. I want to be able to spread it out like a bell curve in the cells I choose. For instance, if it was a five month project it would be distributed as

January - \$1,000
February - \$2,500
March - \$3,000
April - \$2,500
May - \$1,000

If I added another month it would change to
January - \$833.33
February - \$1,666.66
March - \$2,500.00
April - \$2,500.00
May - \$1,666.66
June - \$833.33

I already thought of manually adding percentages to each cell, but the formula needs to be dynamic.

## Drawing Tangent Line On Curve?

Mar 8, 2014

Can we draw tangent to a curve in excel graphs..? If yes if i could have some demo....** this.. I am working on finding rate ** change at an instantaneous point and average rate ** change ie: secant line

## Excel Split A Curve And Fit Trendline Using VBA

Feb 2, 2014

I need to solve about 450 excel sheets for my project.

The spreadsheet has X and Y data and curve is plotted. I need to split the curves into 3 parts based on slope change.

I can do it manually but I need an excel Macro which does this work.

A sample is attached : Excel forum-Lab data.xlsx‎

## Given Points On Curve, Solve For Equation

Feb 25, 2009

Is it possible in excel to find the equation for a curve?

I have 6 known x,y data points on a curve. I need to find the equation for the curve.

## Use Excel To Plot Growth Curve?

Mar 15, 2012

I would like to use excel to plot a growth curve. I would like it to plot the points that correlate to my data without connecting them by a line. I would then like to give excel a formula and have it plot that line on the graph.

## Graph Bell Curve Chart

Jul 14, 2014

I'm trying to graph a bell curve chart using the following data

Hotels per state
Total

AK
4

NH
5

[Code] ......

As you can see I have states and the number of hotels per state what I need not for statistical purposes but more for "pretyness" is to sort this data in a way that what you get is a somewhat of a bell shape curve graph.

## Create Dynamic List Of Dates From Adjacent Cell?

Oct 23, 2013

I have a column with dates in each cell. I need the user to the able to pick a date from a list in the adjacent cell but it must be a date on the same weekday.eg if cell a1 is 23/10/2013 then cell b1 should display a list of Fridays in the future for the user to select from and then it should put the selected value in the cell (eg 30/10/2013).

## Excel 2010 :: Creating Bell Curve?

Jul 29, 2014

I want to create a bell curve for my team's annual appraisal. There are 12 people in my team. The scale is 1-5, where normally rating range from 2.9 to 4.0.

## Display Mean And Confidence Intervals On Bell Curve

Nov 26, 2013

I've managed to figure out how to normalize my data and create several bell curves. However, these charts do not display the mean, std deviation, or confidence intervals. Any way to add these into my charts?

## Put Together A Cancel Curve On An Annual Membership Model

Nov 15, 2009

What would be the best way to put together a cancel curve on an annual membership model?

## Histogram Plot With Normal Curve Overlay

Aug 28, 2002

I would like to create a histogram from experimental data with the normal distribution curve overlaying the histogram.

## Generating Normal Curve From Statistical Values?

May 14, 2013

Is there a way to generate a normal curve from just the statistical values (mean, std dev, etc)? I used the NORMDIST function but have to manually do the x values and it generates what I would descirbe as a "sample" curve. I would like to make one based on user input.

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