Process validation is vital to the success of companies that
manufacture drugs and biological products for people and animals.
According to the FDA guidelines published by the U.S. Department of
Health and Human Services:
“Process validation is defined as
the collection and evaluation of data, from the process design
state through commercial production, which establishes scientific
evidence that a... Continue Reading
you’re working in Minitab and prepping your data for analysis, it’s
common to group data into categories that imply a specific order,
such as Low, Medium, High or Beginning, Middle, End.
But if the data were to appear in a different order in tables
and graphs (for example, Beginning, End, Middle), the result could
be confusing, and might distract from your message.
Fortunately, with Minitab’s va...Continue Reading
Did you ever get a pair of jeans or a shirt that you liked, but
didn't quite fit you perfectly? That happened to me a few months
ago. The jeans looked good, and they were very well made, but it
took a while before I was comfortable wearing them.
I much prefer it when I can get a pair with a perfect fit, that
feel like I was born in them, with no period of
So which pair do you think I... Continue Reading
The language of statistics is a funny thing, but there usually
isn't much to laugh at in the consequences that can follow when
misunderstandings occur between statisticians and
non-statisticians. We see these consequences frequently in the
media, when new studies—that usually contradict previous ones—are
breathlessly related, as if their findings were incontrovertible
Similar, though less... Continue Reading
Want to learn some simple tricks for preparing your graphs for
presentation—specifically, how to add footnotes to your graphs,
display your graphs in one layout, and add objects (shapes, text,
etc.) to make your graphs easier to interpret? Below I’ll share
three tips that can help you get your Minitab graphs
1. Add a footnote to a graph:
If you’re looking to add a footnote while... Continue Reading
For all you creative and fun-loving folks out there, in this
blog post I'm going to share a puzzle instead of a story or lesson.
The holiday season is getting into full swing here in the United
States, and that gives us an opportunity to pause and reflect, and
even have a little fun while still thinking about how we can
improve our processes and products.
Perhaps you're wondering what a puzzle... Continue Reading
we enter late December, snow is falling here on the East Coast of
the United States. The official start to winter is on December 21,
2016, but it’s certainly not uncommon to see snowflakes flying
before this date.
If you live in the U.S., you know the winter of 2015 was one for
the record books. In fact, more than 90 inches of snow fell in
Boston in the winter of 2015! Have you ever wondered how... Continue Reading
The line plot is an incredibly
agile but frequently overlooked tool in the quest to better
understand your processes.
In any process, whether it's baking a cake or processing loan
forms, many factors have the potential to affect the outcome.
Changing the source of raw
materials could affect the strength of plywood a factory produces.
Similarly, one method of gluing this plywood might be better... Continue Reading
If you’re familiar with Lean Six Sigma, then you’re familiar
DMAIC is the acronym for Define, Measure, Analyze, Improve and
Control. This proven problem-solving strategy provides a structured
5-phase framework to follow when working on an improvement
This is the first post in a five-part series that focuses on the
tools available in Minitab Statistical
Software that are most... Continue Reading
It's that time of year again. The time when eggs get nogged,
pudding gets figgy, and it becomes socially acceptable to speak in
rhyme. So on that note, and with apologies to Clement Clarke
Moore, I bring you this timely and heartfelt PSA. Enjoy.
Twas the week before Christmas, and
I couldn't be bothered,
to make sure that our tree, had quite enough water."A sprinkling of needles on the carpet, I... Continue Reading
A member of Minitab's LinkedIn
group asked how to create a chart to monitor change by
month, specifically comparing last year's data to this year's data.
My last post showed how to do this using an
Individuals Chart of the differences between this year's and
last year's data. Here's another approach suggested by a
participant in the group.
Applying Statistical Thinking
An individuals chart of the... Continue Reading
2 of this blog series, I wrote about how statistical
inference uses data from a sample of individuals to reach
conclusions about the whole population. That’s a very powerful
tool, but you must check your assumptions when you make statistical
inferences. Violating any of these assumptions can result in false
positives or false negatives, thus invalidating your
The common... Continue Reading
2016 comes to a close, it’s time to reflect on the passage of time
and changes. As I’m sure you’ve guessed, I love statistics and
analyzing data! I also love talking and writing about it. In fact,
I’ve been writing statistical blog posts for over five years, and
it’s been an absolute blast. John Tukey, the renowned statistician,
once said, “The best thing about being a statistician... Continue Reading
by Matt Barsalou, guest blogger
I know that Thanksgiving is always on the last Thursday in
November, but somehow I failed to notice it was fast approaching
until the Monday before Thanksgiving. This led to frantically
sending a last-minute invitation, and a hunt for a turkey.
I live in Germany and this greatly complicated the matter. Not
only is Thanksgiving not celebrated, but also actual turkeys... Continue Reading
LinkedIn group is a good place to ask questions and get
input from people with experience analyzing data and doing
statistics in a wide array of professions. For example, one member
asked this question:
I am trying to create a chart
that can monitor change by month. I have [last year's] data and
want to compare it to [this year's] data...what chart should I use,
and can I auto-update it?... Continue Reading
week we’re celebrating the annual Thanksgiving holiday in the
United States, which is not only a good time to reflect on the
things we’re grateful for, but it’s also a good time to stuff
yourself with turkey, mashed potatoes, green bean casserole, and
the usual suspects that find their way to the Thanksgiving
While I’m of course very thankful for my family, friends, home,
etc., I’m also... Continue Reading
The season of change is upon us here at Minitab's World
Headquarters. The air is crisp and clear and the landscape is
ablaze in vibrant fall colors. As I drove to work one recent
morning, I couldn't help but soak in the beauty surrounding me and
think, "Too bad everything they taught me as a kid was a lie."
see, as a boy growing up in New Hampshire, I was told that the
sublime beauty of autumn... Continue Reading
In this day and age, it’s not uncommon that data entry errors
occur in data sets that are so large that looking for and
correcting the errors by hand is impractical. Fortunately, Minitab
includes tools that make it easy to get your data into shape, so
that you can proceed to getting the answers you need.
Let’s say, for example, that you were going to look at the
Density Database. It’s... Continue Reading
Pareto charts are a special type of bar chart you can use to
prioritize almost anything. This makes them very useful in making
sound decisions. For example, if you have several possible quality
improvement projects, but not enough time or people to do them all
now, you can use a Pareto chart to identify which projects have the
most potential for making meaningful improvement.
Pareto charts look... Continue Reading
At the inaugural Minitab Insights Conference in September,
presenters Benjamin Turcan and Jennifer Berner discussed
how to present data effectively. Among the considerations they
discussed was choosing the right graph.
Different graphs are good for different things. Of course,
opinions about which graph is best can, and do, differ. Dotplot
devotees might decide that they are demonstrably... Continue Reading
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