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#1
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Regression and the confidence intervals
When preforming a regression analysis, it gives us two cinfidence interval.
The first one if for Beta1, what is the second for? |
#2
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Regression and the confidence intervals
If the fit is to the function y = ax +b then there will be a confidence
interval for both coefficients (a and b) See also http://people.stfx.ca/bliengme/Excel...onfidence2.htm best wishes -- Bernard V Liengme Microsoft Excel MVP http://people.stfx.ca/bliengme remove caps from email "Denis" wrote in message ... When preforming a regression analysis, it gives us two cinfidence interval. The first one if for Beta1, what is the second for? |
#3
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Regression and the confidence intervals
Denis -
The top row of the Coefficients section is for the Intercept. Each other row is for an explanatory variable. In the Regression tool dialog box, if you do not check the box for Confidence Level, each row contains Lower and Upper bounds for a 95% interval, followed by duplicate values. If you do check the box for Confidence Level, and if you enter a specific value like 99%, each row contains Lower and Upper bounds for a 95% interval and Lower and Upper bounds for a 99% interval. - Mike Middleton http://www.DecisionToolworks.com Decision Analysis Add-ins for Excel "Denis" wrote in message ... When preforming a regression analysis, it gives us two cinfidence interval. The first one if for Beta1, what is the second for? |
#4
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Regression and the confidence intervals
Hi Mike,
I couldn't post a new message, sorry, so I tagged a related question as a response to this string.. Question: Now that I used the analysis toolpak to perform regression analysis with the box for confidence level checked and a value entered, is there a way to have a line of confidence drawn to predict the point at which it intersects the x axis in the future? I need to graphically represent this for predicting an endpoint. Thanks for your help. MH "Mike Middleton" wrote: Denis - The top row of the Coefficients section is for the Intercept. Each other row is for an explanatory variable. In the Regression tool dialog box, if you do not check the box for Confidence Level, each row contains Lower and Upper bounds for a 95% interval, followed by duplicate values. If you do check the box for Confidence Level, and if you enter a specific value like 99%, each row contains Lower and Upper bounds for a 95% interval and Lower and Upper bounds for a 99% interval. - Mike Middleton http://www.DecisionToolworks.com Decision Analysis Add-ins for Excel "Denis" wrote in message ... When preforming a regression analysis, it gives us two cinfidence interval. The first one if for Beta1, what is the second for? |
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