👉 An estimator is a method of estimating a parameter, such as the mean or variance of a population. It involves taking an average of some data to estimate the value of that parameter. Estimators are used when we want to make predictions about unknown values based on observed data. Estimation can be done using different methods depending on the nature of the problem and the available data. Some common estimators include: 1. Maximum Likelihood Estimator: This is a method for estimating parameters in statistical models by