Problem 22E

Refer to Exercise 9.21. Suppose that Y1, Y2, . . . , Yn is a random sample of size n from a Poisson-distributed population with mean λ. Again, assume that n = 2k for some integer k. Consider

Reference

Let Y1, Y2, . . . , Yn be a random sample of size n from a normal population with mean μ and variance σ 2. Assuming that n = 2k for some integer k, one possible estimator for σ 2 is given by

PSYCH STATISTICS CHAPTER ONE Populations and Samples ● statistics = mathematical procedures for organizing, summarizing, and interpreting info ● population = set of all the individuals of interest in a study ○ can be pretty big ● sample = set of people selected from a population, usually intended to represent the population ● variable = a characteristic or condition that changes or has different values for different individuals ○ ex. height, weight, gender, personality ● data = measurements or observations ● data set = collection of measurements or observations ● datum = single measurement of observation ○ often called a score