please answer all questions.

QUESTION 3 The following stem-and-leaf plot represent marks (out of 100) distribution for third assessment of a certain STA404 class. 3 2 7 4 4 68 9 5 0 2 3 5 5 7 8 1 24 568 I O 7 3567 8 137 8 9 0 5 a) Obtain the first, second and third quartiles for the above data (4 marks) b) Sketch the box-whisker plot for the above data. Hence, comment the marks distribution for this STA404 class. (4 marks) c) Suggest an appropriate measurement to determine the marks distribution. (1 mark)