02 - Data and Space - Problems - TDBM

Problem 2

3. The aim of sampling is usually to estimate target parameters in the population from data obtained from a (small) sample. Describe the meaning of an accurate estimator and a precise estimator. Put an example for each one of them.

• [?] What are examples of accurate and precise estimators?

Problem 3

Problem 4

Link to problem 4

03. Variabili Aleatorie#Varianza

• [?] why is the variance defined in that way? Including $x_i^2$ and ${\bar{x}}^2$?