# Tagged Questions

Minitab refers to a commercial statistical package distributed by Minitab Inc..

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### Determining the Repeatability and Reproducibility (Gage R&R) in Minitab within a General Linear Model

I am doing some rather complex data analysis and I was wondering if it was possible to determine the reproducibility and repeatability of a measurement system within a GLM in Minitab. In this data, ...
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### Mann-Whitney test W statistics

Below is Mann-Whitney test result from Minitab. At the end of result, there is no p-value but "Cannot reject since W is < 363.0". What does it mean? I cannot ...
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### The Formula of “Fitted Line Plot”

Do you know the formula to the "Fitted Line Plot" from the statistical Minitab? Unfortunately, I was not enable to find the formula.
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### MSE in GLM ANOVA

Sorry for the wall of text, but I'm trying to figure out how to proceed and feel as though I need to clue you in as best I can. Experimental Design: Whole plot: Tree species (Spp) Subplot: Location ...
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### Principal Components Analysis Regression VIF Interpretation in Minitab?

I'm trying to verify my understanding of how to apply principal component analysis to a multiple regression. Here's my current process and understanding using Minitab: Part 1: I already have my data ...
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### Can not determine the ARIMA model for data [closed]

I am trying to develop a useful statistical time series model (ARIMA) using auto arima. The program reported that it can not determine the model. Please help me understand the limitations (if any) of ...
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### Johnson transformation in Minitab allows a too narrow data range

I am using Individual Distribution Identification in Minitab 16, to identify the distribution of 19 values. The Johnson transformation is the only decent fit, and the equation I get is the following: ...
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### Minitab question about binomial probabilities [closed]

What I have tried: My first instinct was to go to Calc>Binomial distributions> Binomial to get the graph of it. 2 questions: What does the question mean it needs values less than 21? Should the ...
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### How To Calculate and Print CDF and Lower Bound CDF value for some t (time) with Minitab (without examining the plot)

I'm a reliability engineer. Cumulative Distribution Function (CDF) in statistics stands for the unreliability (probability of failure at a time value) of the item being tested. Unreliability is very ...
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### Making forecasts in minitab only positive

I'm looking at 30 years of rainfall data, working with the daily average rainfall per month (That sounds weird... it's the total rainfall in the month, divided by number of days in the month). Anyway,...
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### repeated measures anova using minitab

I have to analyze repeated measures data set where each subject’s BMI is measured at several time points. I have two sets of subjects where some were given drug1 and another group of subjects is given ...
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### Interpretation of residual plots — constant variance of residuals

I am trying to analyze these residual plots. Clearly, from the normal probability plot and histogram the standardized residuals are not normally distributed (it shows a moderate negative skew). ...
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### How do I test the stationarity of data using minitab? [closed]

I am working on a time series and trying to fit ARIMA to predict future values.However, I am facing trouble with finding out whether the data is stationary or not.
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### bonferroni and scheffé' simultaneous confidence interval graph in minitab

I need to calculate bonferroni and scheffé' simultaneous confidence interval by hand as a homework. However, I also want to add minitab outputs and graphs to my homework task. How can I plot these ...
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### how to determine skewness from histogram with outliers?

I have the following histogram created in Minitab. I am wondering whether this histogram is actually positively skewed, negatively skewed, or symmetric. By observing the graph itself, it seems that ...
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### minitab p-values of interactions

I am having some trouble in Minitab. I constructed a L16 Taguchi orthogonal array for 5 factors which all have 2 levels by using Minitab, and I need to check if all the interactions are significant or ...
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### Is my nested random-effect model non-hierarchical?

I have a problem with model structure because of the way factors are nested in a potentially non-hierarchical way. I'm not sure if I fully understand the issue but I can't find a way to specify the ...
302 views

### Probability of Event in Logistic Regression

I've a binary response (1 = event happen, 0 = otherwise) and 8 continuous predictors plus 1 categorical. Fitting in Minitab with a Binary Logistic Regression give me this output: ...
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### R-squared adj. in multiple linear regression of 75% = high correlation?

I have a response column and a column of categorical predictors (around 25 categories) and I get with minitab linear regression analysis a R-sqr adjusted of 75%. ...
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### Outliers In Predicted Intervals

In my stats class today, the professor was showing us some output from MINITAB on a prediction interval that was calculated (from time series data). For one of the prediction intervals, MINITAB had an ...
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### How useful is Minitab in the real world? [closed]

I am currently a statistics student within a very good program. We use Minitab for a variety of items/classes. But, as my undergrad taught me, what you use in school isn't necessarily what is used in ...
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### KS test - R, Minitab (and Systat)

I'm trying to figure out how Kolmogorov-Smirnov one-sample testing for normality is done in Minitab (or Systat, since the answers apparently match). If this is my data vector: ...
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### How to run regression on a Taguchi design?

I'm trying to run a regression analysis on a Taguchi design. I have five categorical control factors, one of them with two levels and the other four with three levels. I want to generate a regression ...
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### What is the best analysis to perform on brute force tests?

Basically, I have run a network simulation for video streaming a number of times. I have assigned weights to particular performance metrics of the network measuring their performance each time. ...
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### How do I add this P-value to normal probability plot in Minitab? [closed]

I go to Stat from main menu then Regression -> Regression... Although I have selected almost everything I cannot plot the extra info (p-value, mean, N, etc ) above in circle. I use Minitab 16.2.0.
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### Multiple Regression: Variation Explained

I'm stuck on a homework problem and I'm hoping you all might be able to help me out. I'd be very appreciative! We were given this data set: Data. I ran a regression in Minitab with GPA as the ...
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### How can I statistically compare two time-series? [duplicate]

I have two time-series. Data have been logged over time for two different objects. Is there a significance test, applicable in SPSS or Minitab, that can be used to determine whether there is a ...
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### Model estimation procedure using backward elimination

I have run a multiple linear model using Minitab. The result showed that all variables are not significant. So, I use backward elimination. Lastly, I found that ...
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I'm intending to implement the following factorial design I wish to obtain this alias structure - with a 2^(5-2) factorial design. ...
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### Problem with response optimization with three variables using Response Surface in Minitab

I'm intending to do a response optimization of one response, $y$, having three predictor variables, $x_1$, $x_2$, and $x_3$. These variables are coded in the following manner: ...
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I'm having a problem with a factorial design in Minitab, as it is not as clear how to proceed as all problems I've had thus far. The problem is to create a factorial design with two factors where the ...
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### How to generate random data that conforms to a given mean and upper / lower endpoints?

I'm in need of generating a set of random numbers (between 100 and 300 would suffice), which conform to a given mean, and also fall within certain upper and lower endpoints. Using the statistics ...
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### How can I find the coefficient of correlation between ordered residuals and their expected values under normality?

As the question says I have to find the coefficient of correlation between ordered residuals and expected values under normality in Minitab. How can I do so? I have just started using Minitab and am a ...
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### Different Parameter Estimates of SAS and Minitab for Unreplicated Factorial Designs

I am using famous example from Myers and Montgomery (1995), which is $2^{4}$ factorial design to compare some methods for unreplicated factorial designs concerning active effects and mean squared ...
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### Estimate values below the limit of detection from a left-censored dataset

I have 32/180 determinations of a laboratory marker below the limit of detection (LOD) and would like to estimate them by maximum likelihood estimation. By using Minitab's reliability / survival ...
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### Why do Minitab and SPSS give opposite results in Ordinal Logistic Regression?

I run an ordinal logistic regression model using both SPSS and Minitab. The dataset is exactly the same. The results are exactly the same, but in opposite directions. I have not manipulated default ...
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### Stat test to compare two sets of binomial data

I am doing my undergraduate project and have tested a drug on cells for a responce. The data I have collected shows that the cells either produced a responce, or they did not. Binomial data? ...
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### Bootstrap USL/LSL for non-normal data

This is new statistics space for me, so please excuse my ignorance. I have some data (N=180) that isn't normally distributed (verified in Minitab, P<0.005) and I want to use the data to get a +/- ...
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### How to perform two-sample t-test with Minitab?

I am trying to do a few tests in Minitab and I don't understand why they are not working out. First, my data in minitab has several columns: ...
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### Comparing minitab output to R

I am trying to recreate analysis of diamond data in R and compare it to minitab output cited in http://www.amstat.org/publications/jse/v9n2/datasets.chu.html I'm almost certain its the same data set ...
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### How to fix the constant variance assumption?

We have a project where we have to find the best model using a large set of data. In our current model there are 10 variables, some quantitative, and a few that are qualitative. When we first do ...
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### Unit-root test in Minitab

I've read that Minitab does not perform the Augmented Dickey-Fuller test; I can't find it myself. Is there an alternative function in the package that will run a unit-root test?
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### ARIMA Forecast Restrictions

Is it possible to fit an ARIMA under a restriction that bounds the minimum to positive values? I'm using Minitab.
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### Tips for rejected Ljung-Box stats? Can Minitab model ARIMAX?

Two questions: What are some basic tips on going back to the drawing-board after a seasonal ARIMA fit shows significant coefficients (1,0,0)x(0,1,0) but fails in its Ljung-Box stats? Can minitab ...
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### How do I estimate and interpret a forecast made by Minitab?

From 43 years of monthly stream flow data, I want to get 11 years ARIMA future forecast using Minitab 15 statistical Software. The difficulty is the procedure to be followed, interpretation of model ...
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### How to properly analyze: 4-way ANOVA?

I have a dissertation research question which involves what I am thinking is appropriately analyzed using 4-way ANOVA. The dependent variable is a math anxiety score (uses 5-point Likert scale). The ...
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### Solution for error message in minitab [closed]

I have used minitab software to fit time series model and predict. For some models I got the following error message; "Fitted model may be nonstationary or noninvertible. Completion of computation ...
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### Statistical Significant Difference between 5 groups of data

I'm trying to compare 5 different gears used by fishermen and the amount of bycatch found in each. The values have a unit of "% of time encountered" and range between 0% (ie: never have bycatch) and ...