Regression with Life Data, Incorrect Minitab Documentation?

C

cmoulder

I am doing a minitab analysis with censored data and one accelerating variable.

I seem to be able to do the analysis just fine, and I can duplicate my model coefficients in reliasoft. However, the equation given in the documention to calculate the failure time for a given percentile does not seem to work.

I've attached the coefficients and results straight from the documentation. Can anyone get the same answers as they have?

Thank you,
Chris
 

Attachments

  • Minitabregwithlifedata.jpg
    Minitabregwithlifedata.jpg
    71.3 KB · Views: 230
C

cmoulder

Yes. I'm trying to replicate their results before I use my data. I'm using Minitab 17. The coefficients are the same in Minitab 12, but they switched notation of the shape/scale parameter.

I wouldn't care too much, but I need to calculate a hazard for ~1000 additional samples in another population, and minitab does not let you estimate life for a whole new set of predictor values
 
Last edited by a moderator:
Miner

Miner

Forum Moderator
Leader
Admin
See attached file. The issue is with Ep. Despite appearing to be an exponent, it is actually a multiplier. It is also based on the Smallest Extreme Value distribution.
 

Attachments

  • Reliability Regression.xlsx
    31.1 KB · Views: 140
You must log in or register to reply here.
Thread starter Similar threads Forum Replies Date
B How to improve regression model? Using Minitab Software 7
B Minitab factorial design regression equation center point term Manufacturing and Related Processes 5
T Poisson regression using Minitab Statistical Analysis Tools, Techniques and SPC 3
J Managing design verification regression testing of design changes Design and Development of Products and Processes 2
M Problem with nonlinear regression Using Minitab Software 12
V Regression and homoscadasticity test Statistical Analysis Tools, Techniques and SPC 8
S Significance of regression, correlation coefficient, hypothesesi, confidence interval Using Minitab Software 8
S Least squares estimate, regression model and corresponding residuals Using Minitab Software 13
N Regression Model (Minitab 18) - Which values my input parameters should have Using Minitab Software 2
A Why I get a different kind of regression equation when I do the same data in a differ Using Minitab Software 7
P Basic Minitab Help - It's about Linear Regression Using Minitab Software 1
R Regression for MTBF (Medical Device: Repairs vs Install Base) with Reliability Data Reliability Analysis - Predictions, Testing and Standards 16
S Regression Control Chart - Process Capability Statistical Analysis Tools, Techniques and SPC 18
P How to do Multiple Regression Analysis in Minitab 16 Using Minitab Software 8
B Using Minitab 17's Stepwise Regression to Predict Feature Using Minitab Software 2
A Predictive Model Development (Regression?) Statistical Analysis Tools, Techniques and SPC 5
S How to use Dummy Variable in Regression Model in Minitab Six Sigma 2
S ANOVA/Regression - Analyzing a Dataset which contains over 4500 Points Using Minitab Software 3
O Minitab Script to Save Regression Plots to an Image File Using Minitab Software 8
W Zero setting of correlation graph when plotting best fit linear regression Statistical Analysis Tools, Techniques and SPC 7
S Regression Analysis / ANOVA using Excel Excel .xls Spreadsheet Templates and Tools 2
E How to run an OLS or Logistic Regression when I have Panel Data in Minitab Using Minitab Software 1
S Using Minitab for Multinomial Logistic Regression Using Minitab Software 2
J Minitab Rank Deficiency Issue - Binary Logisitic Regression Using Minitab Software 1
M Understanding of Regression and ANOVA in Minitab Statistical Analysis Tools, Techniques and SPC 8
P Regression Analysis for Aging Study in Minitab Statistical Analysis Tools, Techniques and SPC 10
A Questions about Regression for Modeling, Best Experimental Design Using Minitab Software 2
N Linear Regression Formula with Four Variables to a Power Regression Formula Using Minitab Software 2
Q Regression Analysis for the Attached Data - help needed - TIA Reliability Analysis - Predictions, Testing and Standards 13
B Regression analysis with discrete dependent variable and continuous independent var. Statistical Analysis Tools, Techniques and SPC 13
S How to interpret a Linear Regression in Minitab? Using Minitab Software 3
D Multiple regression with student t distribution Using Minitab Software 1
P How to do Nonlinear Regression and generate a Correlation Statistical Analysis Tools, Techniques and SPC 14
BradM Calling all Regression Analysis Pros! Statistical Analysis Tools, Techniques and SPC 1
C Degrees of Freedom with Linear Regression - Pressure Sensor Uncertainty Measurement Uncertainty (MU) 15
S CQE sample exam - Question 23 about a regression model Statistical Analysis Tools, Techniques and SPC 3
R Prediction Intervals for Quadratic Regression Statistical Analysis Tools, Techniques and SPC 4
S Interpreting Linear Regression Results from Minitab Using Minitab Software 15
R Can Factorial Design provide Regression Equation like RSM? Using Minitab Software 4
V Identifying Significant Factors - Regression Analysis vs Correlation vs ANOVA vs DOE Quality Tools, Improvement and Analysis 7
Q Can I use Regression Analysis in the following scenario Statistical Analysis Tools, Techniques and SPC 18
E Minitab Regression Analysis to predict Horse Racing result Using Minitab Software 2
J Binary logistic regression for attribute/discrete data Using Minitab Software 7
M Regression Analysis Help - Factors influencing a Dependent Variable Using Minitab Software 7
N Using Regression Analysis in Excel - Predicting a Value Statistical Analysis Tools, Techniques and SPC 30
W Z-values in Logistic Regression stem from a Wald test? Using Minitab Software 7
W Discrete vs. Continuous Variables and Linear Regression. Statistical Analysis Tools, Techniques and SPC 7
S How to represent interactions in non-linear regression analysis in Minitab Using Minitab Software 5
J Non-Normally Distributed Residuals - Regression to determine how many testers I need Using Minitab Software 13
I Partial Least Square Regression Result - Question Using Minitab Software 3

Similar threads

Top Bottom