I have created a scatterplot with a trendline and I need a formula to represent the trendline so it can be applied to separate results. How I can create a formula and an R2 value?
View 1 RepliesI am using Excel 2007. I have two sets of data. y-series is 58.61, 58.66, 58.71 and 58.76. x-series is 0.8313, 0.8309, 0.8305 and 0.8301.
I am trying to fit a quadratic function to this data. When I plot a curve and fit a trendline I get the coefficients for the equation ax^2+bx+c
a=1.3939e-11
b=-125
c=162.5225
The plotted line seems to fit the data fairly well.
However, I want to use the linest function and I am using the formula:
=INDEX(LINEST(B2:B5,A2:A5^{1,2}),1,1)
I change the index column number as appropriate to get the coefficients:
a=-75.23775
b=0
c=110.603763
The coefficients from linest seem to be way out. how I can get the output from linest to be the same as the trendline?
I tried to record setting a trendline to 100% transparent but this action doesn't seem to record.
View 2 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.xlsx‎
I have been doing some statistical anaylsis in excel and have been using trendlines within scatter charts quite a bit.
I know excel can display the equation of the line as well as the r-squared on the chart. Is there any way to get the values for the trendline to appear in a cell next to the corresponding chart data? Of course, I can simply enter the formula myself that is given on the chart, but I am wondering if there is a way to do it automatically.
I have included the data below along with the trendline value that I calculated by manually entering the formula from the scatter chart.
Code:
YXTrendline Value
$78.990.53$79.79
$78.730.53$79.73
$80.550.52$80.88
[Code]....
I need VBA to copy the values from a treadline output box on a chart to a new sheet. The macro recorder produces the code below, but I need to make the 5th line generic so that the code will apply to any workbook. The code below will not run without the "Windows("Test.xls").Activate" statement, which restricts the code to a workbook of a specifc name (Test.xls). How can I make this run for any workbook name?
Sub CopyTreadlineData()
Sheets("A").Select
ActiveSheet.ChartObjects("Chart 1").Activate
ActiveChart.SeriesCollection(1).Trendlines(1).DataLabel.Select
ActiveWindow.Visible = False
Windows("Test.xls").Activate
Sheets("Beta").Select
Range("B15").Select
ActiveSheet.Paste
End Sub
is it possible to export a trendline equation from a graph to a cell, or at least to export the coefficients? If yes, how?
View 4 Replies View RelatedI'm in the middle of designing a sheet that (amongst many other things) takes the equation of a graph trendline, pastes it, and calculates the various values along it. I can do it by hand, but when I try to record a macro, it doesn't register that I've highlighted the equation and hit copy. Here's the code I'm working with:
Sheets("Graphs").Select
ActiveSheet.ChartObjects("Chart 1").Activate
ActiveChart.SeriesCollection(1).Trendlines(1).DataLabel.Select
Selection.Copy
ActiveWindow.Visible = False
Windows("Copy of HRA Design calculator1.xls").Activate
Sheets("Binder @ max. stability").Select
Range("A1").Select
ActiveSheet.paste
The problem is line 4 - it can't copy because the text isn't selected.
I'm trying to determine the percentage rate of change in a trendline. I've got a sales chart with 90 days worth of sales figures. I can see that the trendline is trending down, but I'm not sure exactly how much.
If you take the first data point in a trendline and subtract it from the last data point and then divide that by the first it should give you the percent change. Excel must be able to do that math for you but I can't even figure it out to save my life. I can't even figure out how to display the first and last data point much less the "rate" of change I'm looking for.
i have a workbook that contains a series of worksheets. the workbook is a master document list. the first worksheet contains no data. the remaining worksheets are arranged so that A1 has the document number, A2 contains the document title, and A3 contains the review date. Id like to create a search macro that can search for the string entered into textbox1. if this is a number, the macro should search A1:A50 of all but the first worksheets in the workbook, and if its text, the macro should search B1:B50 of all but the first worksheets.
the macro should then select the cell containing what was searched. then id like the macro to prompt me and ask if id like to modify the reviewed date to todays date. d like to be prompted to continue searching for other records if they exist, and after that loop has finished to set the focus back to the search textbox.
I have multiple columns with data and I want to represent them in a bar graph. The problem is that for some of them I want to represent the sum something like:
Columns A and B sum and represent (I don't want to make another column, C, with the sum, the sum of the two columns should be done by the graph).
In column A I have a sentence.
I would like column B to return TRUE if the sentence in column A contains any of the string below:
AAA¤
BBB¤
CCC¤
DDD¤
EEE¤
FFF¤
GGG¤
HHH¤
III¤
JJJ¤
Where ¤ is any number from 1 to 9.
Is there a formula to do this, preferably without having to list all the possible combination of the list e.g. AAA1, AAA2, AAA3, and so on?
how to make letter represent numbers what i am trying to do. i am trying to put a sheet together to make my life easyer. i am a lectuer and need to keep trake of studes progress how this is done is that over the year they are graded my Pass Merit Distinction in using offic 2007 (Excel)and i was to make it so that if i put in a P it will =6 points ,M=12 points and D=18 points and for the total points to for each student to come up on the side after the units if there a rule for this and how would i put the rule into the sheet ?
View 3 Replies View Relatedi have a function in a cell (that works) to extract coefficients from a range of cells in a workbook:
VB: =INDEX(LINEST(CP25:CP27,CQ25:CQ27^{1,2}),1)}
i have variables for cp25:cp27 and cq25:cq27 already defined in my vba code. the values for these in the case i am working on are as follows (returns 110.5):
cp25 = 560
cp26 = 570
cp27 = 580
cq25 = .414
cq26 = .479
cq27 = .536
1) how to do this function in VBA only - this is part of a UDF and cannot have any helper cells
2) how to refer to 560,570,580 as a 'range'. is there a way to put these six variables into my ranges for later processing?
All of the google searches i have deal only with linear regression, taking from existing graphs, or say to just use the function i have above.
I have tried
VB:
Var = Application.WorksheetFunction.LinEst(Sheets("references").Range("CP25:CP27"), Sheets("references").Range("CQ25:CQ27^{1,2}"), 1)
[COLOR=#333333][/COLOR]
but return #value! errors. when i remove the ^{1,2} portion, i do return a value but it is incorrect (returns 160), what is the correct syntax for adding in the ^{1,2}? if you do that would be fantastic, but brings me back to issue #2 in that i need to refer to my variables in the vba code and not this range (as they will eventually be going away).
I found the code snippet and I cant remember what it "means".
View 4 Replies View RelatedThe following percentages equal these numbers:
100% = 5
93-99% = 3
80-92% = 1
<80% = 0
From F5 to AR5 percentages scores will be inserted for each row.
So percentages scores for the first three entries (F5-H5) should yield the following result:
100% + 95% + 85% = 5 + 3 + 1 = 9
I am making a spreadsheet that will be used to track employee time usage. I would like to be able to create a graph of the time throughout the day that shows only whether or not the employee has entered an activity during each particular time slot.
EX: The graph shows the time from 8-10am in 30 minute increments. The employee has entered activities for the time slots from 8-9 and 9:30-10. When the graph is created, I would like to see times 8-9 and 9:30-10 filled (or, charted, or, however I should phrase it) and time 9-9:30 left blank (to represent that no work was done).
I have a scenario where by Column A is date incident opened and Colum B is date incident closed.
And Column C shows the days between them. I got this and its fine. However, how do i
make a table or in any how define it as if the number is 1 - 3 days then it should be A
1-3 days = A
4-6 days = B
7-8 days = C
9 days onwards = D
This is because i need to make a chart and graph of the turn around time and the best is to define into a character alphabet so the chart will show the statistics of how many A, B, C and D But how do i do that.
I have 52 tables in one spreadsheet to represent 52 weeks and have created another table to sum the weekly data but the sum function doesn't do it because of the amount of cells which need adding.
example: c3, c14, c24, c34, c44, c54 etc...
In one column (f5:F100) I have five digit numbers that represent a persons code. I have five groups of codes, they are 10000-15000, 16000-19000, 20000-25000, 26000-29000, and 30000-40000. In another column (Column H) I have an "X" saying the are qualified in something.
I am looking for how to write a statement that says answers this question:
How many people are qualified in the codes between 10000-15000.
Ultimately I am going to take this number and divide it by the total number of people in the group to get a percetage of qualified people in the group.
I have a column of values the values can be "T", 0.00 ->any number to the nearest hundredth. I thought I had this problems solved a while back but after having time to do some quality control I found that anytime there is a value of "T" the macro does not work. I have had some great help with this in the past to get as far as I have but I still cannot seems to get it 100%. I have attached a sample file. The result that I would like to see is in the cell BH145 is "16,17,23" without the quotes of course.
When you open the worksheet you will see that the values of concern are precipitation values. These values are rounded to nearest hundredth. When there is a trace of precip however it is recorded as "T" therein lies the problem that I cannot seem to solve.
I am doing an ANOVA analysis of survey results for a set of products, and would like to present a chart to graphically represent the results.
View 1 Replies View RelatedIF key of C has notes CDEFGABCDEFGABC progression, then notes
1-2-3-4 : 2-3-4-5 : 3-4-5-6 will result in C D E F D E F G E F G A respectively
I want to create note patterns regardless of scale type: Major, minor, modal etc in each of 12 keys. Music software exists but simple EXCEL formulas should be available or easily created.
I want to get a return value of date in column C whereas column A represent a date and column B represent a number. Simplest formula in excel is Column C (Feb 26, 2014)= Column A (Feb 21, 2014) + Column B (5). I want it to have in macro code.
View 14 Replies View RelatedI was wondering if there is a formla that will delete a formula when it has done its calculation, or stop the formula from constantly updating.
I've got a formula
=IF(COUNTA(A1)=1,TODAY(),"")
When something is typed in Cell A1 the cell with the formula will input todays date.
Is there a formula that will stop this formula from updating, as when you go into the file on a different day the date would have been updated.
I have a situation where I have to curve fit data, this can lead to different formulas being used with varying constants.
Is it possible to pickup a TEXT based formula and related constants from other cells, and then place this into another cell as a functioning formula. For Example
Cell A1 contains the formula as a text string whether it be y=a+bx+cx^2, or y=a+b/x, etc
Cells A2:A6 contain the individual constants, a, b, c, etc
I would then want the VBA to read the text based formula and put it into an output cell as a functioning excel formulae.g
In cell B10: =a+b*A10+c*A10^2
I understand picking the constants up and putting the formula should not be too much of an issue, however trying to insert the variable form of the curve fit is the part that I am struggling with, and am unsure if possible.
Here is the scenario:
A B C D
BananasApplesOrangesTotal113=A1+B1+C1
I need to reference the formula in D1 with the cells headers names.
In a perfect world, it would take
=A1+B1+C1:
and produce:
=Bananas+Apples+Oranges
I have an existing formula in a cell linking back to a start date only. determining how to add an additional formula to exclude weekends, and possibly holidays.
View 2 Replies View RelatedI am trying to use a combination of Concatenate and IF formula to produce an email.
My input.
D4: First Name:
D5: Middle Name:
D6: Last Name:
D8: Organization:
Once all these are filled, I want the formula to produce a result like
FirstName.M.LastName@Organization.com
I have used the following formula.
[Code] .....
Problem is if there is a middle name the formula works fine, but in case where there is no middle name, it produces the following result.
FirstName..LastName@Organization.com
How do I remove the additional (.) in cases where there is no middle name.
Attached File : Email Generator.xlsx‎
I'm having some trouble trying to get excel to input a formula into a cell. I'm still a novice at VBA right now, so I don't think my problem will be too much of a brain buster.
I want a formula in Cell A6 (and I already know it correctly works) in this format: =E6&VLOOKUP(I6,'FA-Fund Data'!B$1:C$2000,2,FALSE)&J6