# Why D and not F? Why 5-foot-8 and not 5-foot-10?

```>Dan Levitin's response does not answer Chuck Watson's question (in
>my understanding of it).  Why "D" all over the continent rather than
>"F#"? Chuck's talking about the mean and Dan is talking about the

Why D and not F?  Why 5-foot-8 and not 5-foot-10?

Forgetting the airball chant for a moment (and ignoring the "height"
analogy, too) let's just assume that we measured the mean pitch of
everybody's speaking voice at a basketball game.  Because the pitch of
a speaking voice pitch is a continuum, the distribution of these means
would approximate a normal distribution with some particular pitch as
the grand mean.  There would be little variance with this large
sample.

Whatever that mean speaking pitch was for the spectators at the
particular game we measured would represent the mean of some physical
property in humans (like height or weight).  I see no reason a priori
to expect that this mean pitch would be different at different
basketball games.  Of course, I'm assuming that a crowd in Boston is
just as representative a sample of Americans as a crowd in San
Francisco, insofar as the "speaking pitch" dimension is concerned, and
this admittedly is in potential conflict with Deutsch's findings of