I need help to start this. can you please show me how to start Standard Deviation accuracy and precision A student in the lab was asked to dispense

I need help to start this. can you please show me how to start

Standard Deviation accuracy and precision

1. A student in the lab was asked to dispense 2.00mL of an unknown liquid using a buret and record it's mass. They repeated this 15 times and found the average mass of the liquid was 2.0158g with a standard deviation of 0.0012598g.(Note they did not yet round off). Report the average mass and standard deviation.