REQUIREMENT: No need explanation, Just the solution, formula and Answer

Activity 2 Measures of Variability or Dispersion a. The monthly number of cars sold by a car dealer from January to October for a particular year are: 20 24 12 10 18 4 15 6 11 19. Find the range, variance and standard deviation. b. Sample annual salaries, in thousands of pesos, for Manila and Makati are listed. Manila: 34 25 17 17 27 25 29 33 26 Makati: 26 23 27 28 25 26 18 26 31 *Compute for the range, variance and standard deviation; and interpret the result. *In which area salary is more consistent?Activity 4 Skewness 1. Determine the coefficient of skewness for each of the following sets of data and describe the result. a. x = 50 x= 40 S = 4.5 b. x= 100 x = 120 S = 11.5 C. X = 75 x= 85 S = 6.2 d. x= 295 x = 250 S = 35 2. At Saint Mary's Academy, the mean age of the students is 19.2 years, with a standard deviation of 1.2 years. The median age is 18.6 years. Compute the coefficient of skewness. Describe the skewness