Excellent feedback from readers on my speculations about the sex disparity among victims of the Las Vegas shooter: 36 women, 22 men.*p*.

Several readers observed that the disparity is not statistically remarkable on reasonable assumptions about the composition of the concert audience.

Here are the arguments.

- Assume that precisely half the concert attendees as a whole are each sex: 50 percent male, 50 percent female. The issue then maps into a simple coin-tossing problem.

**Answer**: 8.7 percent.

That’s worth an eyebrow-squinch, but it’s not really eyebrow-*raising*.

The customary (although perforce arbitrary) standard for raising a statistician’s eyebrows is *five* percent. That would correspond to a 37-21 split or worse. We’re near the edge there, but not over it.

- You can work the numbers the other way, too.

Now ask the question: Given that a random selection of 58 from that population had 22 males and 36 females, what can we deduce about likely values for *p*?

**Answer**: On that customary standard, *p* is probably (i.e. at the 95 percent level of probability) between 48 percent and 74 percent.

Note that includes the possibility of an even split, or even of a slight male majority, 51 or 52 percent.

Bottom line here: Neither of those answers raises the statistician’s eyebrows. Neither is remarkably improbable.

So we are likely just seeing random statistical fluctuation here.

Many thanks to all who emailed in.