Listed below are the commissions eamed ($000) last year by a sample of 15 sales representatives at Furniture Patch Inc. $41 $5.9 $76 $11.5 $12.2 $13.6 $15.4 $15.8 $16.7 $174 $18.7 $22.3 $36.6 $43.2 $81.7 a. Determine the mean, median, and the standard deviation. (Round your answers to 2 decimal places.) Mean Median Standard deviation b. Determine the coefficient of skewness using Pearson's method. (Round your answer to 3 decimal places.) Coefficient of skewness c. Determine the coefficient of skewness using the software method. (Round your answer to 2 decimal places.) Coefficient of skewness