Writing

Choose

Uncertainty Wednesday: Variance

In last week’s Uncertainty Wednesday, I introduced the expected value EV of a random variable X. We saw that EV(X) is not a measure of uncertainty. The hypothetical investments I had described all had the same expected value of 0. [...]  Read more

ChangeX: Impact As A Service

Susan and I have been longtime supporters of the wonderful ChangeX platform: ChangeX helps spread social innovation across communities. This week ChangeX introduced a new model for donors, which they are calling Impact as a Service (IaaS). This is a [...]  Read more

Uncertainty Wednesday: Expected Value

In today’s Uncertainty Wednesday we start to explore the properties of random variables. The first one we will look at is the so-called “expected value” or EV for short. The EV is simply the probability weighted average of a random [...]  Read more

Uncertainty Wednesday: Random Variables

Just a quick reminder on where we currently are in Uncertainty Wednesdays: I had introduced the idea of measuring uncertainty, then we defined what a probability distribution is and learned about entropy, which is a measure of uncertainty that is [...]  Read more