Category Archives: Estimation

Student’s t-statistic

Introduction In 1908, a guy at Guinness found a way to measure which types of barley produced the best beer-brewing yields: he called it the “t-statistic”. However, because Guinness was paranoid about giving away trade secrets, he had to publish his ideas under the pseudonym “Student”. Although we now know his name was William Sealy… Read More »

We’ve been doing it all wrong!

I can hear myself saying it now: “If you count up the number of work items in each column, and keep a record of each item’s start and end date, then you can create a CFD [Cumulative Flow Diagram], control chart and histogram”. Apparently I was wrong. Apparently nearly all of us are doing it… Read More »

Don’t forget to add in the conversation

Story, Epic or even Saga, what is the difference? David Lowe’s post from last year gives a good description of each. However, in my opinion, there is not much difference. A story, epic or saga all narrate the type of user, the need of the user, and the value returned by fulfilling that need. The… Read More »