[45 marks]
Use the following information on the Final Grade on the 11th Grade Math Project. time
6 18 49 35 26 37 46 68 78 79 80 91
20 76 86 85 67 58 56 89 30 32 76 57
98 98 89 23 47 87 57 77 68 18 69 21
51 30 65 95 87 48 68 78 89 52 56 17
65 66 46 8 49 99 100 80 58 48 37 26
1) Draw a grouped frequency table using the interval limits 1 - 10, 11 - 20, 21 - 30, …..91 - 100. Label your score column, Grade, and your frequency column, Number of students. Also include a boundaries column, midpoint column and cumulative frequency column [10]
2) Turn your table landscape. Draw and label a histogram. Let every 1 cm = 1 units on the y-axis and 1 cm = 5 units on your x-axis. [13]
3) Turn your table landscape. Draw and label a frequency polygon. Let every 1 cm = 1 units on the y-axis and 1 cm = 5 units on your x-axis. [10]
4) Turn your table landscape. Draw and label a cumulative frequency curve. Let every 1 cm = 5 units on the both axes [10]
5) Are the final grades a continuous or discrete variable? How do you know?
[2]