Tag Archives: student’s t-statistic

Estimation meets Cynefin

Question: Which provides a better estimate: Planning Poker or an ‘expert’? Many teams would answer that question by saying Planning Poker is always better than an expert’s estimates. We’ve been told it’s the case so many times, that few question it. Truth is, an expert estimate is sometimes more appropriate than an estimate created using Planning Poker. Sometimes… Read More »

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 »