Suppose Wolverine Inc. had returns of 21%,12%,4%, and 31% over the past four years. What is the standard deviation of Wolverine Inc. returns for the past four years? (Do not round intermediate calculations. Input your final aniswer as a percent rounded to two decimal places lee 12 34 ) Wumeric Resporise Suppose Wolverine Inc. had returns of 21%,12%,4%, and 31% over the past four years. What is the standard deviation of Wolverine Inc. returns for the past four years? (Do not round intermediate calculations. Input your final aniswer as a percent rounded to two decimal places lee 12 34 ) Wumeric Resporise