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Regression error - "NUM!"
Hi,
Can anyone tell me why I might be getting "NUM!" as P-Values in my output? I'm not sure what that might mean. I deleted a few fields of data to increase my R Square and all of a sudden I'm getting "NUM!" as several of my P-Values. Any help would be greatly appreciated! AudreyJ |
Answer: Regression error - "NUM!"
Hi AudreyJ,
The "NUM!" error in regression analysis usually occurs when there is a problem with the data in the cells that are being used for the analysis. This error message indicates that Excel is unable to perform the calculation because it is encountering a value that is not a number. There are a few reasons why you might be seeing this error message in your regression analysis. One possibility is that there are blank cells or cells with text in the range of data that you are using for the analysis. Another possibility is that there are cells with errors, such as #DIV/0! or #VALUE!, in the range of data. To fix this issue, you can try the following steps:
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Regression error - "NUM!"
When you say you deleted some fields, do you mean rows or columns?
What type of data are you regressing; dates against numbers? if so, is all data numeric data type; does working with a smaller data set produce the same result? You might try to copy and paste special values "AudreyJ" wrote: Hi, Can anyone tell me why I might be getting "NUM!" as P-Values in my output? I'm not sure what that might mean. I deleted a few fields of data to increase my R Square and all of a sudden I'm getting "NUM!" as several of my P-Values. Any help would be greatly appreciated! AudreyJ |
Regression error - "NUM!"
Hi Headly!
When I say I deleted fields I mean I deleted 4 rows from about 50 (the ones that had the highest residuals). My results are similar to the results I had before except I have a higher R Square after deleating the rows and I have the NUM! error as P-Values. I tried copy paste special values to my data, I still get the same errors. All of the data I'm regressing is numbers. And actually I pasted the first row of data below. It's a little messy, but hopefully you can get the idea... 9/29/6 Midspread (bps) Expected Loss (bps) Multiperil USWD (Base case CAEQ) EurWD Other Perils Notional ($mm) Indemnity (Base case Parametric Index/ Pure Parametric/ Modeled Loss) Industry Index MITT 575 194 0 0 0 1 250 0 0 0 Thank you so much for your response, Audrey "headly" wrote: When you say you deleted some fields, do you mean rows or columns? What type of data are you regressing; dates against numbers? if so, is all data numeric data type; does working with a smaller data set produce the same result? You might try to copy and paste special values "AudreyJ" wrote: Hi, Can anyone tell me why I might be getting "NUM!" as P-Values in my output? I'm not sure what that might mean. I deleted a few fields of data to increase my R Square and all of a sudden I'm getting "NUM!" as several of my P-Values. Any help would be greatly appreciated! AudreyJ |
Regression error - "NUM!"
P-value is
=TDIST(t_Stat, df[Residual], 2) What are the values of "t Stat" and its corresponding "Standard Error" as well as "df" and "SS" for Residual? Jerry "AudreyJ" wrote: Hi Headly! When I say I deleted fields I mean I deleted 4 rows from about 50 (the ones that had the highest residuals). My results are similar to the results I had before except I have a higher R Square after deleating the rows and I have the NUM! error as P-Values. I tried copy paste special values to my data, I still get the same errors. All of the data I'm regressing is numbers. And actually I pasted the first row of data below. It's a little messy, but hopefully you can get the idea... 9/29/6 Midspread (bps) Expected Loss (bps) Multiperil USWD (Base case CAEQ) EurWD Other Perils Notional ($mm) Indemnity (Base case Parametric Index/ Pure Parametric/ Modeled Loss) Industry Index MITT 575 194 0 0 0 1 250 0 0 0 Thank you so much for your response, Audrey "headly" wrote: When you say you deleted some fields, do you mean rows or columns? What type of data are you regressing; dates against numbers? if so, is all data numeric data type; does working with a smaller data set produce the same result? You might try to copy and paste special values "AudreyJ" wrote: Hi, Can anyone tell me why I might be getting "NUM!" as P-Values in my output? I'm not sure what that might mean. I deleted a few fields of data to increase my R Square and all of a sudden I'm getting "NUM!" as several of my P-Values. Any help would be greatly appreciated! AudreyJ |
Regression error - "NUM!"
How many degrees of freedom do you have for the residuals? Is it zero?
-- Regards, Tushar Mehta www.tushar-mehta.com Excel, PowerPoint, and VBA add-ins, tutorials Custom MS Office productivity solutions In article , says... Hi, Can anyone tell me why I might be getting "NUM!" as P-Values in my output? I'm not sure what that might mean. I deleted a few fields of data to increase my R Square and all of a sudden I'm getting "NUM!" as several of my P-Values. Any help would be greatly appreciated! AudreyJ |
Regression error - "NUM!"
Hi Jerry,
I tried to paste what you asked about in a way that is clear below, I hope it comes out okay. I'm not sure exactly how the formula you gave for Pvalue works. Does the below make any sense to you? Thank you for your response, Audrey Coefficients Standard Error t Stat P-value Intercept 1,189.0 - 65,535.0 #NUM! Expected Loss (bps) 1.7 0.3 4.9 0.0 df SS Regression 9.0 2,790,427.3 Residual 49.0 561,151.7 "Jerry W. Lewis" wrote: P-value is =TDIST(t_Stat, df[Residual], 2) What are the values of "t Stat" and its corresponding "Standard Error" as well as "df" and "SS" for Residual? Jerry "AudreyJ" wrote: Hi Headly! When I say I deleted fields I mean I deleted 4 rows from about 50 (the ones that had the highest residuals). My results are similar to the results I had before except I have a higher R Square after deleating the rows and I have the NUM! error as P-Values. I tried copy paste special values to my data, I still get the same errors. All of the data I'm regressing is numbers. And actually I pasted the first row of data below. It's a little messy, but hopefully you can get the idea... 9/29/6 Midspread (bps) Expected Loss (bps) Multiperil USWD (Base case CAEQ) EurWD Other Perils Notional ($mm) Indemnity (Base case Parametric Index/ Pure Parametric/ Modeled Loss) Industry Index MITT 575 194 0 0 0 1 250 0 0 0 Thank you so much for your response, Audrey "headly" wrote: When you say you deleted some fields, do you mean rows or columns? What type of data are you regressing; dates against numbers? if so, is all data numeric data type; does working with a smaller data set produce the same result? You might try to copy and paste special values "AudreyJ" wrote: Hi, Can anyone tell me why I might be getting "NUM!" as P-Values in my output? I'm not sure what that might mean. I deleted a few fields of data to increase my R Square and all of a sudden I'm getting "NUM!" as several of my P-Values. Any help would be greatly appreciated! AudreyJ |
Regression error - "NUM!"
Hi Jerry,
I tried to paste the values that you asked about in a way that is readable below. I'm not sure exactly how the formula you sent me for PValue works. I don't have much experiance with this type of thing. Do you see anything in the below? Thank you for your response, Audrey df SS MS F Regression 9.0 2,790,427.3 310,047.5 27.1 Residual 49.0 561,151.7 11,452.1 Total 58.0 3,351,579.0 Coefficients Standard Error t Stat P-value Intercept 1,189.0 - 65,535.0 #NUM! Expected Loss (bps) 1.7 0.3 4.9 0.0 "Jerry W. Lewis" wrote: P-value is =TDIST(t_Stat, df[Residual], 2) What are the values of "t Stat" and its corresponding "Standard Error" as well as "df" and "SS" for Residual? Jerry "AudreyJ" wrote: Hi Headly! When I say I deleted fields I mean I deleted 4 rows from about 50 (the ones that had the highest residuals). My results are similar to the results I had before except I have a higher R Square after deleating the rows and I have the NUM! error as P-Values. I tried copy paste special values to my data, I still get the same errors. All of the data I'm regressing is numbers. And actually I pasted the first row of data below. It's a little messy, but hopefully you can get the idea... 9/29/6 Midspread (bps) Expected Loss (bps) Multiperil USWD (Base case CAEQ) EurWD Other Perils Notional ($mm) Indemnity (Base case Parametric Index/ Pure Parametric/ Modeled Loss) Industry Index MITT 575 194 0 0 0 1 250 0 0 0 Thank you so much for your response, Audrey "headly" wrote: When you say you deleted some fields, do you mean rows or columns? What type of data are you regressing; dates against numbers? if so, is all data numeric data type; does working with a smaller data set produce the same result? You might try to copy and paste special values "AudreyJ" wrote: Hi, Can anyone tell me why I might be getting "NUM!" as P-Values in my output? I'm not sure what that might mean. I deleted a few fields of data to increase my R Square and all of a sudden I'm getting "NUM!" as several of my P-Values. Any help would be greatly appreciated! AudreyJ |
Regression error - "NUM!"
Hi Jerry,
I tried to paste the values that you asked about in a way that is readable below. I'm not sure exactly how the formula you sent me for PValue works. I don't have much experience with this type of thing. Do you see anything in the below? Thank you for your response, Audrey df SS MS F Regression 9.0 2,790,427.3 310,047.5 27.1 Residual 49.0 561,151.7 11,452.1 Total 58.0 3,351,579.0 Coefficients Standard Error t Stat P-value Intercept 1,189.0 - 65,535.0 #NUM! Expected Loss (bps) 1.7 0.3 4.9 0.0 "Jerry W. Lewis" wrote: P-value is =TDIST(t_Stat, df[Residual], 2) What are the values of "t Stat" and its corresponding "Standard Error" as well as "df" and "SS" for Residual? Jerry "AudreyJ" wrote: Hi Headly! When I say I deleted fields I mean I deleted 4 rows from about 50 (the ones that had the highest residuals). My results are similar to the results I had before except I have a higher R Square after deleating the rows and I have the NUM! error as P-Values. I tried copy paste special values to my data, I still get the same errors. All of the data I'm regressing is numbers. And actually I pasted the first row of data below. It's a little messy, but hopefully you can get the idea... 9/29/6 Midspread (bps) Expected Loss (bps) Multiperil USWD (Base case CAEQ) EurWD Other Perils Notional ($mm) Indemnity (Base case Parametric Index/ Pure Parametric/ Modeled Loss) Industry Index MITT 575 194 0 0 0 1 250 0 0 0 Thank you so much for your response, Audrey "headly" wrote: When you say you deleted some fields, do you mean rows or columns? What type of data are you regressing; dates against numbers? if so, is all data numeric data type; does working with a smaller data set produce the same result? You might try to copy and paste special values "AudreyJ" wrote: Hi, Can anyone tell me why I might be getting "NUM!" as P-Values in my output? I'm not sure what that might mean. I deleted a few fields of data to increase my R Square and all of a sudden I'm getting "NUM!" as several of my P-Values. Any help would be greatly appreciated! AudreyJ |
Regression error - "NUM!"
The standard error for the intercept is reported as (essentially) zero.
Therefore the t statistic is (essentially) infinite, with a p-value of (essentially) zero. The #NUM! for p-value appears to be an intervention of the analysis ToolPak, since the TDIST function does not appear to return #NUM! in this range. Jerry "AudreyJ" wrote: Hi Jerry, I tried to paste what you asked about in a way that is clear below, I hope it comes out okay. I'm not sure exactly how the formula you gave for Pvalue works. Does the below make any sense to you? Thank you for your response, Audrey Coefficients Standard Error t Stat P-value Intercept 1,189.0 - 65,535.0 #NUM! Expected Loss (bps) 1.7 0.3 4.9 0.0 df SS Regression 9.0 2,790,427.3 Residual 49.0 561,151.7 "Jerry W. Lewis" wrote: P-value is =TDIST(t_Stat, df[Residual], 2) What are the values of "t Stat" and its corresponding "Standard Error" as well as "df" and "SS" for Residual? Jerry "AudreyJ" wrote: Hi Headly! When I say I deleted fields I mean I deleted 4 rows from about 50 (the ones that had the highest residuals). My results are similar to the results I had before except I have a higher R Square after deleating the rows and I have the NUM! error as P-Values. I tried copy paste special values to my data, I still get the same errors. All of the data I'm regressing is numbers. And actually I pasted the first row of data below. It's a little messy, but hopefully you can get the idea... 9/29/6 Midspread (bps) Expected Loss (bps) Multiperil USWD (Base case CAEQ) EurWD Other Perils Notional ($mm) Indemnity (Base case Parametric Index/ Pure Parametric/ Modeled Loss) Industry Index MITT 575 194 0 0 0 1 250 0 0 0 Thank you so much for your response, Audrey "headly" wrote: When you say you deleted some fields, do you mean rows or columns? What type of data are you regressing; dates against numbers? if so, is all data numeric data type; does working with a smaller data set produce the same result? You might try to copy and paste special values "AudreyJ" wrote: Hi, Can anyone tell me why I might be getting "NUM!" as P-Values in my output? I'm not sure what that might mean. I deleted a few fields of data to increase my R Square and all of a sudden I'm getting "NUM!" as several of my P-Values. Any help would be greatly appreciated! AudreyJ |
Regression error - "NUM!"
Hi Tushar,
Freedom for the residuals is actually up to about 30%. - Greta "Tushar Mehta" wrote: How many degrees of freedom do you have for the residuals? Is it zero? -- Regards, Tushar Mehta www.tushar-mehta.com Excel, PowerPoint, and VBA add-ins, tutorials Custom MS Office productivity solutions In article , says... Hi, Can anyone tell me why I might be getting "NUM!" as P-Values in my output? I'm not sure what that might mean. I deleted a few fields of data to increase my R Square and all of a sudden I'm getting "NUM!" as several of my P-Values. Any help would be greatly appreciated! AudreyJ |
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