Standard error vs. standard deviationDifferences in terminology are pervasive in the world of statistics and really multiply in the applied world. You...

Superior but UselessWell, yes. The key point is to understand the meaning of the standard error. There is less variability in the means of several sam...

Blunder Detect!For the direct series, 0.0013 (0.0012732 to 7 decimal places) is the sample standard deviation of the 20 observations, not the standard...

You're right, that was a typo. My spreadsheet shows 20.09383506, which agrees with your calculation.But there is one anomaly in the historical records...

Long process, though, for something that should be obvious to even the most casual observer. One more appeal to go.

And, on the other side:

If you type "871 seventh avenue new York" in the Google search window, and then click on the thumbnail in the lower corner of the map that comes up, I...

I'm not so sure the "grid" has a heightCalculating the coefficients might be a problem, but the concept seems sound. A quick and dirty approach is to ...

I'm not so sure the "grid" has a heightWell put, but I hope that you would agree that a state plane is a fixed surface secant to the ellipsoid. That b...

It's a secant plane, so it intersects the ellipsoid along two lines and its depth below the ellipsoid varies. For a Lambert Projection, its maximum de...

Oops. I re-read your original post and see that you already know this. Sorry.

You can check the values by using these formulas:

Exactly. And NGS chooses base line distances that cancel part of the error accounted for by the constant term, something that's not always an option f...

Well, yes, to some extent. With no specific instructions from manufacturers, the introduction of an ISO standard on some manufacturers spec sheets, an...

What job would a recent 4-year surveying degree start out in? It seems that they combine a great deal of book knowledge with very little experience. D...

That evidently is true, confirmed by the reference to Rueger. The NGS guidelines for establishing CBL's specify that the two components be considered ...

I didn't see an email address in your profile.

Thanks, John. It's probably not worth the effort, but it might be helpful.Part of my problem is the conflicting information from references that shoul...