If looking at tesla stock how would you answer this question and the math for it

Calculate the standard deviation for your stock to measure total risk for the company.

1. Use a sample size of 5 years. You will first need to look up or calculate the returns on this stock for the last five years and find the average annual return.

2. If you need to calculate the returns, use the holding period return formula for each year and be sure to include any dividends paid each year. Determine the average return.

3. Use the average return and annual returns to calculate the standard deviation for your stock.