Reliability analysis is the perfect tool for calculating the
proportion of items that you can expect to survive for a specified
period of time under identical operating conditions. Light bulbs—or
lamps—are a classic example. Want to calculate the number of light
bulbs expected to fail within 1000 hours? Reliability analysis can
help you answer this type of question.
But to conduct the analysis... 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
Every day, thousands of people withdraw extra cash for daily
expenses. Each transaction may be small, but the total amount of
cash dispersed over hundreds or thousands of daily transactions can
be very high. But every bank branch has a fixed cash flow, which
must be set without knowing what each customer will need on a given
day. This creates a challenge for financial entities. Customers
expect... Continue Reading
Since the release of Minitab
Express in 2014, we’ve often received questions in technical
support about the differences between Express and Minitab 17.
In this post, I’ll attempt to provide a comparison between these
two Minitab products.
What Is Minitab 17?
Minitab 17 is an all-in-one graphical and statistical analysis
package that includes basic analysis tools such as hypothesis
testing,... Continue Reading
The ultimate goal of most quality improvement projects is clear:
reducing the number of defects, improving a response, or making a
change that benefits your customers.
We often want to jump right in and start gathering and analyzing
data so we can solve the problems. Checking your measurement
systems first, with methods like attribute agreement analysis or
Gage R&R, may seem like a needless waste... Continue Reading
We hosted our first-ever Minitab Insights conference in
September, and if you were among the attendees, you already know
the caliber of the speakers and the value of the information they
shared. Experts from a wide range of industries offered a lot of
great lessons about how they use data analysis to improve business
practices and solve a variety of problems.
I blogged earlier about five key...Continue Reading
We’ve got a plethora of case studies showing how businesses from different
industries solve problems and implement solutions with data
analysis. Take a look for ideas about how you can use data analysis
to ensure excellence at your business!
Boston Scientific, one of the world’s leading developers of
medical devices, is just one organization who has shared their
story. A team at their Heredia,... Continue Reading
other day I was talking with a friend about control charts, and I
wanted to share an example one of my colleagues wrote on the
Minitab Blog. Looking back through the index for "control
charts" reminded me just how much material we've published on this
Whether you're just getting started with control charts, or
you're an old hand at statistical process control, you'll find some
valuable... Continue Reading
you perform a statistical analysis, you want to make sure you
collect enough data that your results are reliable. But you also
want to avoid wasting time and money collecting more data than you
need. So it's important to find an appropriate middle ground when
determining your sample size.
Now, technically, the Major League Baseball regular season isn't
a statistical analysis. But it does kind... Continue Reading
been called a "demographic watershed".
In the next 15 years alone, the worldwide population of
individuals aged 65 and older is projected to increase more
than 60%, from 617 million to about 1 billion.1
Increasingly, countries are asking themselves: How can we
ensure a high quality of care for our growing aging
population while keeping our healthcare costs under control?
The answer? More... Continue Reading
Earlier this month, PLOS.org
published an article titled "Ten Simple Rules for Effective Statistical
10 rules are good reading for anyone who draws conclusions and makes decisions
based on data, whether
you're trying to extend the boundaries of scientific knowledge or
make good decisions for your business.
Carnegie Mellon University's
Robert E. Kass and several co-authors devised... Continue Reading
You often hear the data being
blamed when an analysis is not delivering the answers you wanted or
expected. I was recently reminded that the data chosen or collected
for a specific analysis is determined by the analyst, so there is
no such thing as bad data—only bad
This made me think about the
steps an analyst can take to minimise the risk of producing
analysis that fails to answer... Continue Reading
Most of us have heard a backwards way of completing a task, or
doing something in the conventionally wrong order, described as
“putting the cart before the horse.” That’s because a horse pulling
a cart is much more efficient than a horse pushing a cart.
saying may be especially true in the world of statistics. Focusing
on a statistical tool or analysis before checking out the condition
of your... Continue Reading
If you want to convince someone that at least a basic
understanding of statistics is an essential life skill, bring up
the case of Lucia de Berk. Hers is a story that's too awful to be
true—except that it is completely true.
flawed analysis irrevocably altered de Berk's life and kept her
behind bars for five years, and the fact that this analysis
targeted and harmed just one person makes it more... Continue Reading
When I wrote
How to Calculate B10 Life with Statistical
Software, I promised a
follow-up blog post that would describe how to compute any “BX”
lifetime. In this post I’ll follow through on that promise, and in
a third blog post in this series, I will explain why BX life is one
of the best measures you can use in your reliability
As a refresher, B10 life refers to the time at which 10% of... Continue Reading
Reliability and survival analysis is used most frequently in
manufacturing. Companies use these methods to estimate the
proportion of units that will fail within, or survive beyond, a
given period of time. But could these
reliability and survival analysis techniques prove
useful in a zombie apocalypse, too? Today's blog post explores that
Think. This is what Zachary is telling... Continue Reading
Since it's the Halloween season, I want to share how a classic
horror film helped me get a handle on an extremely useful
film is based on John W. Campbell's classic novella "Who Goes
There?", but I first became familiar with it from John
Carpenter's 1982 film The Thing.
In the film, researchers in the Antarctic encounter a predatory
alien with a truly frightening... Continue Reading
Whatever industry you're in, you're going to need to buy
supplies. If you're a printer, you'll need to purchase inks,
various types of printing equipment, and paper. If you're in
manufacturing, you'll need to obtain parts that you don't make
But how do you know you're making the right choice when you have
multiple suppliers vying to fulfill your orders? How can you
be sure you're... Continue Reading
a multi-million dollar company that released a product without
knowing the probability that it will fail after a certain amount of
time. “We offer a 2 year warranty, but we have no idea what
percentage of our products fail before 2 years.” Crazy, right?
Anybody who wanted to ensure the quality of their product would
perform a statistical analysis to look at the
reliability and survival of... Continue Reading
Minitab is the leading provider of software and services for quality
improvement and statistics education. More than 90% of Fortune 100 companies
use Minitab Statistical Software, our flagship product, and more students
worldwide have used Minitab to learn statistics than any other package.
Minitab Inc. is a privately owned company headquartered in State College,
Pennsylvania, with subsidiaries in the United Kingdom, France, and
Australia. Our global network of representatives serves more than 40
countries around the world.