3.1 Calculate the mean, median, mode, quartiles and standard deviation of discrete and grouped data. Question 4 The chart below shows a stem and leaf plot showing the height (in cm) of a sample of 24 students in Access to Science class stem leaf 13 8 14 1 A 9 15 2 4 5 8 2 3 4 5 8 16 17 2 3 3 5 18 2 3 8 State the minimum value and maximum value. Determine the mode and median value for this sample. Calculate the mean and standard deviation for this sample. Find the lower and upper quartiles and construct a box plot to represent this sample