1. The Final grades of 40 students who passed a math exam are represented in the pie chart below. [4 marks: 2.5 + 1.5] Final grades of 40 students who paased a math exam 10% 15% 20% A+ B C 25% D 30% a. Use the pie chart to complete the table. Grades Frequency of students Relative frequency of students. A+ A B C D b. What percentage of students obtaining a B grade or better? 2. The Following bar chart shows the number of males and females who were treated at a Physiotherapy and wellness Clinic during the months of January to June. [3 Marks] Number of Males and Females treated at a physiotherapy and wellness clinic 100 80 60 40 20 0 Jan Feb Mar Apri May Jun Male Female a. How many males and how many females were treated in total at the clinic over course of the 6-month period recorded? b. In which months were more females treated at the clinic than males? c. In which month was there the greatest difference between the number of males treated and the number of females treated at the clinic?