Suppose that Y1, Y2,..., Yn denote a random sample of size n from a Poisson distribution with mean . Consider 1 = (Y1 + Y2)/2 and 2 = Y . Derive the efficiency of 1 relative to 2.

Week 1 of Notes : ( Consists of Chapter 1 ) Statistics 1 , Lecture 1 notes in more detail Chapter : Statisti is a waysort out inform, a source to make sense out of certain data. Data is justinformation from an obser ation. A Case known also asobservational , is an individual entibeing observed for data. A Variablis haracterisor trahat vari s. *Depending on the data given, you can determine what the case is that is being observed. 2 Types of Variab s: 1. Categorical variaare observations thaall into different ca example being “groups”. 2. Quantitative varia are also observationsnumerical va it is often the measured amount of someth Remembering that quantitative varialways e a numbers. Remembe