How to calculate +/- 1 and +/-2 standard deviation

4 3 2 27 40 5 46 24 30 25 Mean 37. 8 24 35, 2 2518 *Add your group means to the class data table on the Smart Board before doing the statistical analysis Data Analysis: Do the appropriate calculations in Data Table 2 below. Data Table 2: Statistical Analysis of the Number of Drops of Distilled Water Contained on the Surface of a Penny Calculation # Drops Distilled # Drops Distilled # Drops Distilled # Drops Oil Water Water + Soap Water + sugar Mean 34, 45 20. 17 2 9. 2 22. 17 Standard Deviation (SD)* 3+ 38 3, 89 +/- 1 SD +/-2 SD Standard Error of Mean (SEM)* 1 1 89 1 ,12 2.37 +/- 2 SEM 3, 79 2 25 2159 Use the formulas for standard deviation (SD) and standard error of the mean (SEM) found on your formula chart