Question 3: The marks for a sample of Mr. Zupan's two Data Management classes are given below: Class A had four students and the marks were 64, 55. 55 and 55. Class B had four students and the marks were 92, 55, 51 and 34 a) Determine the three measures of central tendencv for each class {round to nearest number). {5 marks} b} Calculate the variance and standard deviation for each class {round to two decimals places). {6 marks} c) Use part In} to comment on the data. (2 marks)