Help ? With explanation if possible ? This stuff makes my brain hurt.

The table below shows the percent increase in salary for entry-level, management, and executive employees at a company. Entry-Level 8.41 7.65 11.54 9.67 10.07 9.98 9.68 11.00 11.54 0.11 Management 16.58 8.46 9.83 11.30 14.73 11.74 8.01 10.31 9.98 9.78 Executive 11.22 13.64 13.02 14.48 15.90 14.63 13.04 13.21 13.80 12.68 To study the variability of raises for the three different employee statuses, calculate the sample standard deviations. Round to 4 decimal places. Status Standard Deviation Entry-Level Management Executive