The annual report of Dennis Industries cited these primary earnings per common share for the past 5 years: $2.34, $1.37, $2.15, $4.28, and $5.08. If we assume these are population values.What is the arithmetic mean primary earnings per share of common stock? (Round your answer to 2 decimal places.) What is the variance? (Do not round intermediate calculations. Round your answer to 2 decimal places.)