Extracted text: The marks scored by 25 students in a Statistics examination is shown below 59, 76, 66, 52, 75, 68, 65, 74, 80, 72, 61, 50, 70 70, 75, 62, 73, 81, 68, 76, 53, 62, 56, 77, 84, 1) Construct a frequency distribution table with 5 classes. 2) Using the above frequency table find the mean, standard deviation and coefficient of variation of the data.