# Reading 8 (Miller), Chapter 3 AIM, small typo

Discussion in '2013 Errata' started by David Harper CFA FRM CIPM, Mar 6, 2013.

1. ### David Harper CFA FRM CIPMDavid Harper

"AIM: Calculate the mean and variance of sums of larger variables"

"AIM: Calculate the mean and variance of sums of variables"

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from my email exchange on 3/6:

Hi Steve & Bill,

I hope you are doing well. Re AIM under Chapter 3 (Miller) Basic Statistics, I think instead of:
“Calculate the mean and variance of sums of larger variables.” [sic, page 8]

The intent is perhaps:
“Calculate the mean and variance of sums of a large number of variables.” (as in, a portfolio of securities), I think?

Thanks!
David Harper, CFA, FRM, CIPM

David,