i an confused about this question please help me.

Duning the past 10 years, the percent returns on two mutual funds (aggressive and passive) expressed in percentages were as follows Note that this is a sample of returns a) Compute the expected return for the two funds. Round your answers to two decimal places Aggressive = Passive = b) Compute the varance and standard deviation of the returns of the two funds. Round your answers to two decimal places Varance Aggressive : Passive = Standard Deviation