A sample of 12 accounting firm reveals the following number of certified public accountants (CPAs) hired before the pandemic. Given data : 7,10,9,14,11,8,5,12,8,3,13,6 Determine the following (round off to two decimal place) 1. Mean = 2. Median = 3. Mode = 4. Range = 5. Sample Variance = 6. Standard Deviation = 7. Kurtosis = 8. Skewness = 9. What is the coefficient of variation for this sample? percent