The minitab tag has no wiki summary.
1
vote
3answers
55 views
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?
...
1
vote
1answer
82 views
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 +/- ...
0
votes
1answer
158 views
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: ...
4
votes
1answer
144 views
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 ...
2
votes
0answers
126 views
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 ...
1
vote
1answer
246 views
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?
1
vote
0answers
71 views
ARIMA Forecast Restrictions
Is it possible to fit an ARIMA under a restriction that bounds the minimum to positive values? I'm using Minitab.
2
votes
1answer
150 views
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 ...
3
votes
1answer
355 views
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 ...
1
vote
0answers
416 views
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 ...
1
vote
1answer
168 views
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 ...
0
votes
2answers
740 views
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 ...
3
votes
1answer
276 views
Software for learning statistical quality control
I'm taking a course in Statistical Quality Control as an elective in my masters program. We're using Montgomery's Introduction to Statistical Quality Control, 6th Edition.
The book uses minitab ...
0
votes
1answer
2k views
Problem with ARIMA in Minitab
I have made non-stationary data stationary by differencing at lag 1 and then differencing the differences at lag 11. The data values for months 1/06 through 6/11 are in an Excel file at ...
