Question

what calculator screen has statistics (mean, stddev, etc)

Explanation:

Many scientific calculators have a statistics - mode screen. For example, on TI - 84 Plus, the STAT screen is used for entering data and calculating statistics like mean and standard deviation. Casio scientific calculators also have a similar statistics - related screen for such calculations.

Answer:

Scientific calculators usually have a statistics - related screen for calculating mean, standard deviation etc. (e.g., TI - 84 Plus STAT screen, Casio's statistics screen)