Cumulative frequency Quiz

Name: ______________________   Date: __________   Score: ____ / 10

10 questions. Calculator allowed. Show your working. steplyclass.com/statistics/cumulative-frequency/quiz/

1. 1

   Cumulative frequency: 0-10: 4, 10-20: 9, 20-30: 15, 30-40: 8, 40-50: 4, find the median
   1. A) −247
   2. B) 24.7
   3. C) −24.7
   4. D) −2.47

2. 2

   Cumulative frequency: 0-5: 3, 5-10: 7, 10-15: 6, 15-20: 4, find the median

   Answer: ____________________

3. 3

   Cumulative frequency: 10-20: 4, 20-30: 8, 30-40: 12, 40-50: 8, 50-60: 8, find the median
   1. A) 367
   2. B) 36.7
   3. C) −36.7
   4. D) 3.67

4. 4

   Cumulative frequency: 0-4: 2, 4-8: 6, 8-12: 8, 12-16: 4, find the median

   Answer: ____________________

5. 5

   Cumulative frequency: 0-10: 4, 10-20: 9, 20-30: 15, 30-40: 8, 40-50: 4, find the upper quartile
   1. A) 32.5
   2. B) −32.5
   3. C) −3.25
   4. D) −325

6. 6

   Cumulative frequency: 0-20: 8, 20-40: 16, 40-60: 12, 60-80: 4, find the interquartile range

   Answer: ____________________

7. 7

   Cumulative frequency: 100-110: 6, 110-120: 14, 120-130: 12, 130-140: 8, find the median

   Answer: ____________________

8. 8

   Cumulative frequency: 0-30: 12, 30-60: 28, 60-90: 24, 90-120: 16, find the interquartile range

   Answer: ____________________

9. 9

   Cumulative frequency: 0-2: 6, 2-4: 14, 4-6: 22, 6-8: 10, 8-10: 8, find the median
   1. A) 0.49
   2. B) −4.9
   3. C) 4.9
   4. D) 49

10. 10

    Cumulative frequency: 20-40: 10, 40-60: 30, 60-80: 25, 80-100: 15, find the lower quartile

    Answer: ____________________