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)?
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.
View 9 Replies View RelatedI 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.
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
From a chart in Excel I need to automatically calculate what the annual percentage growth rate is of a trend line. How to automate this in Excel? I've attached a sample so you can see what I'm trying to accomplish.
View 6 Replies View Relatedwhat i need to do to track daily sales with 10% growth from previous year total sales.
I have 12 separate sheets for each month.
On each sheet i have separate columns"date" "goal" "actual" "% from goal".
What function/formula is needed to calculate the daily target goal taking into account that weekends are busier
I am trying to calculate the compound annual growth and my starting point is a negative number. The example is that I have (273,000) for the YE 2003 and have Growth to the amount of +767,000 at YE 2006. The formula I have been using for other calculations where the starting point is positive is =POWER(J23/C23,1/O$1)-1. Where J23 = a positive amount and C23 = a positive number. This formula works fine, but when C23 = a negative number the formula does not work and the % does not make sense.
View 6 Replies View RelatedI have US money supply data, arranged monthly from 1975-2008. I need to calculate the monthly growth rates. I would really appreciate some help as I have no clue how to do this.
here is a link to a text version of the data I am using: [url]
I have access to a huge database in excel that involves sales data. The database is catagorized like:
Column A = Country
Column B = Product
Column C = Company
Column D = (Product) category
Column E = Sales
Column F = Period
Column G = Sales of particular company
Column H = Market category
Further details: see attached file!
I am looking for way to express developments ( absolute and relative) in market growth and market share over time.
I have 3 questions:
How can i show the growth of the total market sales over time (period 1 to 4)?
How can i show the growth of the Int comapny sales over time (period 1 to 4)?
How can i show the market share of the Int company over time (period 1 to 4)?
Market growth can be calculated by comparing the sales amounts of the total market (or the Int company) to previous periods. Market share can be calculated by expressing the sales figures of the Int company in percentage of the total sales in a partical period (i=1,2,3,4).
So, I work in a large indoor grow facility, and as such, we need to keep an active, updated calendar of all activities that will need to happen in the grow. If something happens to a set of plants, we need to change to date of transplant into the next pot size and every transplant after that, as well as moves into the flowering room from the vegetative room.
I have tried to manually make a calendar (I'm not worried about auto-generating a calendar or auto-filling dates, only things that happen on those days.) and tie in this information, but I'm having issues automatically searching a column and finding the date, and then pulling more information from that row automatically. (i.e. If anything in Column E has the date 7/3/14, then fill the data from Column C and Column B on the same row.)
I'm attaching a copy of the spreadsheet that I am trying to pull the Data from, and a copy of the Calendar I mocked up.
FYI, the spreadsheet I am pulling from Automatically fills once you put in the Clone Date, and then if you add in an adjusted date, it will adjust all later dates from that same section.
I tried to find something other than Excel as well to do this for me, but AFAIK nothing exists to make the calendar update Live, only to reproduce a new calendar with the current spreadsheet. This is not an option, I need it to stay up to date.
I used HTML Maker to show my sheet below. I want to have cells K3:Z3 automatically populated using the same calculations as "Linear Trend" Auto Fill and K4:Z4 using "Growth Trend" Auto Fill without having to do it manually. The data in Row 2 will of course be continually updated with actual scores so the remaining empty month scores would need to be updated again. I am using this to come up with a more accurate prediction method than a simple trend line in Excel graphs.
******** ******************** ************************************************************************>Microsoft Excel - Auto Fill setup for questions.xls___Running: xl2002 XP : OS = Windows XP (F)ile (E)dit (V)iew (I)nsert (O)ptions (T)ools (D)ata (W)indow (H)elp (A)boutL14=ABCDEFGHIJKLMNOPQRSTUVWXYZ1Months00.030.10.250.512345678910111215182124273033362Score10 1010 9887 3Linear Predicted10 1010 9887 4Growth Predicted10 1010 9887 5Auto filled Linear in Red10 1010 98877.066.666.275.885.485.094.74.33.913.513.122.732.331.941.551.156Auto filled Growth in blue10 1010 98877.146.826.526.235.955.695.435.194.964.744.534.334.143.953.783.617Actual scores10 1010 98877554456 Sheet1 [HtmlMaker 2.42] To see the formula in the cells just click on the cells hyperlink or click the Name boxPLEASE DO NOT QUOTE THIS TABLE IMAGE ON SAME PAGE! OTHEWISE, ERROR OF JavaScript OCCUR.
I have excel 2007. My data sheet has columns for the sales for May 2009 and the sales for May 2008. Next to it is a column for the % growth between the 2 periods. When I put all this info into a pivot table and add the formula as below to the pivot table it shows the correct values for all the individual customers but not for the Grand Total line. Here it just shows a zero.
Can you also help so that the names on the data side of the Pivot table is the same as on your original sheet where it is reading the info from, and doesn't say "Sum of May 2009, but only says "May 2009".
Please show how you would work out the % Growth between the two different columns, as I tried it, and on the individual cell the data is correct but on the grand total line it shows it as zero and does not apply the formula.
I used the formula
=SUM('MAY 2009 H&B'/'MAY 2008 H&B'*100-100)
=sum(33,296,271 / 46,852,649 *100-100)
Result should be -29, but it shows zero
I have a model that makes projections based on annual growth rates. However, I need to evaluate the data based on monthly intervals. With an 8% return on an investment of $1,000,000 my ending balance at the end of the year should be $1,080,000 and in year 2 it would be $1,166,400 and so on. In order to evaluate the monthly data I need each month in year 1 to be based off $1,000,000, so it would be 8%/12=.006666% or $6,666.66 per month. The next year would be based off $1,000,000 + (6,666.66*12) = $1,080,000 and each month would be $7,200.
writing a formula to evaluate over 360 periods.
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).
View 4 Replies View RelatedI am trying to find a formula to calculate the total size from a to b with the curve being in cluded in the total.
View 14 Replies View RelatedI'm trying Calculate Curved Price Rate by SF. phil.freestyle@gmail.com
View 5 Replies View RelatedFor 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.
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.
View 9 Replies View RelatedI'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
How I can find a max in an xy chart curve fit?
View 9 Replies View RelatedI 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})
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.
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
View 1 Replies View RelatedI 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.xlsxâ
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.
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.
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.
View 1 Replies View RelatedI'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?
View 7 Replies View RelatedWhat would be the best way to put together a cancel curve on an annual membership model?
View 5 Replies View RelatedI would like to create a histogram from experimental data with the normal distribution curve overlaying the histogram.
View 7 Replies View Related