(GDP)Renewing our mail-list
A short and simple administrative announcement ...
In common with many other organisations, we are celebrating the arrival of the EU General Data Protection Regulation (GDPR) by renewing our mailing list. We only use our mailing list for relatively infrequent communication about our blogs, research and software. We don't sell or pass on anyone's contact details.
In order to keep things simple, we are going to start from a clean slate. So, even if you had previously joined our mailing list, in this post-GDPR world, we're going to ask for you to reconfirm your desire to hear from us. If you don't do this, you won't receive mailshots from us again (but obviously can still find out what we are up to by visiting us here).
And, of course, once you are on our list, you can remove yourself at any time. You can either choose the "Remove" option from our "Contact" page, or simply ask us to remove you by email or by replying to any communication.
I told you it would be short and simple!
Previous posts
What's in a (file)name?
Functions of a random variable
Assume we have a random variable, \(X\), with expected value \(\eta\) and variance \(\sigma^2\). Often we find ourselves wanting to know the expected value and variance of a function of that random variable, \(f(X)\). Fortunately there are some workable approximations involving only \(\eta\), \(\sigma^2\) and the derivatives of \(f\). In both cases we make use of a Taylor-series expansion of \(f(X)\) around \(\eta\):
\[f(X)=\sum_{n=0}^\infty \frac{f^{(n)}(\eta)}{n!}(X-\eta)^n\]
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