Ratios calculated on daily returns for last 3 years (Updated as on 31st March, 2021)
Standard Deviation value gives an idea about how volatile fund returns has been in the past 3 years. Lower value indicates more predictable performance. So if you are comparing 2 funds (lets say Fund A and Fund B) in the same category. If Fund A and Fund B has given 9% returns in last 3 years, but Fund A standard deviation value is lower than Fund B. So you can say that there is a higher chance that Fund A will continue giving similar returns in future also whereas Fund B returns may vary.