This summarizes the general belief in math education...

[lone_wanderer23]

Comments

[mathmanatm]

That "Me too" wedge is too large.
Unless a lot of people are lying.

[mathmanatm]

Wait. WHAT IS THE POPULATION? This graph is meaningless without that information!!
What are n for all of those groups? Are we being lied to with "statistics"?

[mathmanatm]

Your title is anecdotal evidence only!
Peer review journals would tell you to revise and resubmit.

[lone_wanderer23]

I don't know that this would be going to a peer journal, per se.

This is one of those graphs you see on the evening news.

As for population size, I'll run with "sufficiently large". (n >= 30)

[mathmanatm]

Meh. With an n around thirty, you would still be looking at something with a rather large confidence interval, seeing as you'd be looking at the normal standard error only divided by about 5. (sigma over the square root of n, whoo!)