The annual report of Dennis Industries cited these primary earnings per common share for the past $5$ years: $$2\mathrm{.}42,$$$1\mathrm{.}03,$$$208,$$$4\mathrm{.}19.$ and $$6\mathrm{.}84.$ Assume these are population values.

Required:

a$.$ What is the arithmetic mean primary earnings per share of common stock?

Note: Round your answer to $2$ decimal places.

Arithmetic mean $$

b$.$ What is the variance?

Note: Do not round intermediate calculations. Round your answer to $2$ decimal places.

Variance $$