30 Need 100 percent perfect answer asap if i will rate positive no explanation required just write answer and round to 4 decimal places

Moving to another question will save this response. Question 30 of 40 Question 30 1 points Save Answer Over the past 4 years an investment returned 0.1,-0.12, -0.08, and 0.13. What is the standard deviation of returns? (Note: input raw results NOT percentage results. For example, input 0.0102 NOT 1.0296)