By The Numbers
First, a number of assumptions are in order regarding project management jobs. Let’s first say that there are approximately 5.5 million project management jobs in the United States. Currently, there are approximately 700,000 individuals with the Project Management Professional (PMP) certification. In addition, there are approximately 8,000 individuals with “Agile" Project Manager Certification (PMI-ACP).
Second, let’s make a number of assumptions concerning computer security jobs. This is because, for the purposes of this paper, we are using a computer security certification as part of the cross-certification argument. There are approximately 240,000 cybersecurity positions in the United States and there are approximately 65,000 individuals with the Certified Information Systems Security Professional (CISSP), according to ISC-squared (ISC2), the sponsoring organization for that certification.
Now that we have those numbers available, let’s do a little elementary probability analysis on those numbers to illustrate the cross-certification theory.
If there are 700,000 individuals with PMP, that would be 700,000 divided by the 5.5 million project management opportunities in the US. This would be (700,000/5500000) = .127 which would be 12.7%.
If there are 8,000 individuals with Agile certifications, that would be 8,000 divided by 5.5 million project management opportunities, which would be 8000/5500000 = .002 which would be .2% (it is VERY good to have this certification since you would be very unique).
Finally, if there are 65000 individuals with CISSP, that would be 65,000 divided by 240,000 cybersecurity opportunities, which would be 65000/240000 = .278 or 27.8%
Therefore, if you have any one of these certifications, you could be unique (Agile) or unique (PMP) by these numbers. However, similar to someone taking a cutting of a flower and adds it to another flower, both strengths are sometimes fed into the resulting unique flower. In the same way, you can formulate how unique you will be by some probability formulas.
The way to determine the final probability of three differing events occurring in the same timeframe is to multiply the resulting probabilities.
You would take .127*.002*.278, multiply them together and come up with the resulting probability of .00007, which would be .007%. I would call unique for an individual with several certifications.
Let’s say that you decide not to get the Agile certification and still get the PMP and the CISSP. You would still be relatively unique with a probability of .127*.278 = .035, which would be 3.5%. This is still much better than the 28% or 13% in either of the previous certifications.