4 CONTENTS 5 Continuous Random Variables 29 5.1 ProbabilityDensityFunction(pdf) . . . . . . . . . . . . . . .29 5.2 TheNormalRandomVariable ...
political arithmetician’s uses of statistics lacked formal methodological techniques for gathering and analysing data. Methods for sample surveys and census taking were in their infancy well into the nineteenth century (Fienberg, 2014). Another thread in the development of modern statistics was the foundations of probability, with its