The correct answer is 0.0084, Can someone show me how to do this (preferably in Excel)?

Outcome Probability Return Boom 60% 0.27 Normal 25% 0.18 Recession 10% 0.13 Depression 5% 0.05 What is the variance of this asset's returns? Please report your answer as a decimal, rounded to four decimal places. 0.0041 0.0084 margin of error +/-0.001