Regression Analysis. |
Regression Analysis. - Excel |
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So far I've only thought of making 3 linear regressions,one on each plane (XY,XZ,YZ) and combining them to create the plane.I don't know if there's an easier,more accurate and better way to do this.
Also what's the precision of the regression equation.it seems like it provides 4 decimals for the a coefficient and 2 for the b constant.Is that good,can i make it provide more accurate equation for the regression it draws?I mean does it use this exact equation or does it display an approximation of the regression it drew?
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I was thinking of trying a nested if/and statement but I haven't quite figured out how to do it. Basically I want to identify the two values where it switches from positive to negative and also indentify the values where it goes negative to positive, I can then fit a straight line between them to find a better approximation of the intercept (though it might not be necessary). Preferably I'd like it all one function as I'm not doing it in VBA (I might do later though, we'll see).
Can anyone suggest how I'd find these value or the x-intercept. Any help would be greatly appreciated.
If I double click the cell and then hit enter it will re-total the area and then give me the correct value, but I'd obviously rather is just work right the first 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?
Firstly i haven't used excel to a great extent since my college days. So i'm having to re-learn 99.9% of everything i once new...
I am volunteering for a non profit organization and trying to create a reservation system for the rooms that they have - kind of like hotel software, but in excel (i did a similiar thing in college but for plane seats)
Please find it attached.
What i need it to do:
Copy all of the info from the main page to the guest lit (a new row each time).
From the guest list to the Gannt chart - i did a few tutorials on dynamic gantt charts using conditional formatting but cannot get them to work when based on data on a different worksheet.
Finaly is there a way to check for availabilty on any given date?
if just someone could point me in the right direction, i would be appreciate it so much words can't express!!!
Best Regards,
Jamie
P.S for the calender drop down on the main page, i'm using 'microsoft time & date picker 6.0)
http://www.2shared.com/file/6521961/...ibsV05b32.html - pop ups on this site
http://www.easy-share.com/1906519167/RibsV0.5b3.2.xlsm - same file, better website
example;
8:00 to 8:07 = 8.0 hrs
8:08 to 8:23 = 8.25 hrs
8:24 to 8:38 = 8.5 hrs
8:39 to 8:53 = 8.75 hrs
8:53 to 8:59 = 9.0 hrs
I am having trouble writing an equation that would sum the clock-in and clock-out times (2 per day) and display the total time in these quarter hours and adding an additional hour if it is >= to *:53. Any help would be great.
ie. add points to find their concentration on a standard curve.
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?
Thanks.
E.g.
Manchester United 3 - 0 Arsenal
Prediction: 4 - 1
Points: 1
I've found a formula online that works for most scores; the correct score (e.g. 3 - 0), a correct win (e.g. 4 - 1), and in the case of a draw (e.g Man Utd 1 - 1 Arsenal, and the prediction 2 -2), correct draw (but not the correct score). The points are as follows: Correct draw (Prediction = result): 4 Correct win (Prediction = result): 3 Correct win, incorrect score (Winner correct, score not): 1 Correct draw, incorrect sco 1
The formula I found online for all but the correct draw is: =IF(A3&B3=C3&D3),3,IF(AND(A3=B3,C3=D3),1,IF(AND(A3>B3,C3>D3),1,IF(AND(A3<B3,C3<D3),1,0)))))
Could someone help me work out how I can write a formula to add before the above that will check the contents of four cells (the home score, away score, home prediction, away prediction), and if the number in all 4 cells are the same, allocate 4 points? I've tried using averages, but some combinations would void this. I've also used the SUM function, but the same happens, as with MULTIPLYING.
Something like =IF(A3:D3) are equal, 4,0
Below are a few examples of what I mean:
(Result) (Prediction) (Points)
A B C D E
3 - 3 3 - 3 4
2 - 1 3 - 1 1
1 - 0 1 - 0 3
3 - 3 2 - 2 1
Apologies in advance if I haven't explained this clearly enough.
Thanks
Will
I have various cut lengths that I can pick from...
14'-10".....13'- 9".. 12'-8"........(up to 6 different lengths)
I need to know the best combination of lengths to cut the long bar into to have minimal scrap left when we get to the end of the 550 feet.....
Cut as many of the longest cut lengths possiable.....Cut as few of the shortest cut lengths possiable
Due to the fact that I will have to convert this to a PLC application when completed, I want to find a mathmatical way to do this inside excel and not use the "solver"....Assuming that I/we can come up with an equation to do this .....
Any and all advice/help would be appricated.....
So AHW18.787 becomes AHW18 787 and AHW18787 with
=SUBSTITUTE(A1,"."," ") and
=SUBSTITUTE(A1,".","") respectively, and
AHRTW-A18-7007 becomes AHRTW A18 7007 and AHRTWA187007 with
=SUBSTITUTE(A1,"-"," ") and
=SUBSTITUTE(A1,"-","").
What I need to be able to do is merge these formulas into one, so that no matter what format the part number is in A1, I get a version of it with spaces in B1, and a version of it with no spaces in C1. I just have not been able to nest it all together - is it even possible with this command?
Thx
How do I enter the value in a cell (say B4) into a formula as a constant so it doesn't change when I copy it down the column?
For example,
B4 = 2.4 (a constant)
This is the result I want:
F6 =C8 + B4*4.243
F7 =C9 + B4*4.243
F8 =C10 + B4*4.243
B4 remains constant as I copy F6 down.
What's the correct formula for F6 so I can copy it down and keep B4 fixed?
Thanks.
All I need is to know if there is an upward trend or downward trend of the numbers.... I can't have something that simply takes the first and last number and checks if it's higher or lower. I need to actually see if they are trending upwards. Also how would i go about making it so that if they are trending upwards it shows an up arrow, and down arrow for downwards...
And finally, if the trend continues at the same rate, how long it will take the number to reach a goal. Each data point will be 1 week apart, with an ultimate goal needed to be achieved at the end.
This will be a completely separate formula on the sheet....
Any help?
A1 type in 10, A2 type in =A1 (calculated A2 to be 10)
B1 type in 5
And then click the copy on B1, and then click paste special on cell B2, the only options it gives me are text and unicode text and so no matter how I paste, cell b2 will always be populated with a value of 5. I cannot imagine a simpler copy and paste and no matter what I do I can't make this work.
All cells are formatted as general. It seems that all copy and pasting of formulas in my excel has been disabled. If I open any spreadsheet on my computer, I can't copy and paste formulas, but do the exact same thing on the exact same spreadsheet on any other computer and it works no problem.
Any help?
Could you be so kind as to provide some code that will enable me to display a text box on a userform rounded up to 1 decimal place.
Where am I going wrong....
it calculates the number entered in textbox1 and divides it by a value that changes in cell O26 but the answer is in about 8 or more decimel places.
Only need like 65.3 as an answer not 65.277756942
This is the code ive used.
Private Sub CommandButton1_Click()
TextBox2.Value = Val(TextBox1.Value) / Range("O26").Value
End Sub
My Cell C3 is a numeric value.....I have set conditional formatting to
make the text red and bold when the number is equal or less than 10,000
is there a way I can make cell E3 display a message when the C3
condition is true?? or if not a message is there a way to make a
message box pop up when my C3 condition of less then or equal to 10,000
is true?
how would I do something like this?
If that number is less than -100, I want it to show as blank.
Any help?
Right now, I'm trying to accomplish this by making a conditional format...meaning when my cell equals less than -100 I make the cell color and font the same (so it looks blank, but its not). When I print it, it still shows the negative value.
Thanks.
To make those windows I need to cut these lengths into smaller sizes.
I need to do this economically.
How can I use Excel to help me make this a reality.
Firstly you would take a big size out of it and then another size out of the offcut piece.
And then another size out of the offcut left over.
I need to know how many full stock lengths (6500) long it will take to cut all the pieces listed above.
Is it possible?
You need to take into account the quantity of each size and fit it all in together for the most optimal outcome.
See attached example of possible layout.
I need to have a cell on Sheet2 display the TEXT from a cell on Sheet1, is his possible??
Example:
Sheet1, Cell A1 contains a clients name and I would like to have Sheet2, Sheet3, Sheet4 etc... Display that clients name in a cell of my choosing (could be a different cell on each Sheet) automatically after entering it once on Sheet1, cell A1.
I thought this was possible but I can't seem to figure it out. I haven't done any real Excel work in quite a long time but I thought I had done this before a long time ago!! Any help would be GREATLY appreciated!! Thanks in advance...
P.S. If I use autosum to do this it just displays the number 0, obviously, since it is trying to add numbers...
I uploaded a copy of the spreadsheet, What I would like to happen is have the text from Sheet1,D4 automatically be placed in Sheet2,A1 and Sheet3, B2. Hope this helps
-Aric
I have some formulae in A1, is it possible for cell B1 to display the value only of A1 without the link to the formulae. I dont want to have to run a macro, or paste values, more of a formula that could be assigned to cell B1 so whenever A1 is changed, so is B1 automatically.
Thanks,
Pedro.