Mean, standard deviation, and percent error. Calculate the mean (in g) ( 2 points) and the standard deviation (in g ) ( 3 points) for the following data. Show your calculated work. 3.8261g,3.9574g,3.8410g,3.9172g The "true" value associated with the data above is 3.8506g. Assuming the mean that you calculated represents the measured value, calculate the percent error. Show your calculated work. (3 points)