Given observationsⅩ=(1,…,!n),an estimator is a random variable of the form 0=g(X), for some function g Note that since the distribution of X depends on 0 the same is true for the distribution of o We use the term estimate to refer to an actual realized value of e◼ Given observations 𝑋 = 𝑋1,… ,𝑋𝑛 , an estimator is a random variable of the form Θ ෡ = 𝑔 𝑋 , for some function 𝑔. ◼ Note that since the distribution of 𝑋 depends on 𝜃, the same is true for the distribution of Θ ෡. ◼ We use the term estimate to refer to an actual realized value of Θ ෡