Mean of grouped data Quiz

Name: ______________________   Date: __________   Score: ____ / 10

10 questions. Calculator allowed. Show your working. steplyclass.com/statistics/mean-of-grouped-data/quiz/

1. 1

   Find the mean of grouped data 0-10: 3, 10-20: 7, 20-30: 6, 30-40: 4.
   1. A) mean ≈ 20
   2. B) mean ≈ 5
   3. C) mean ≈ 102.5
   4. D) mean ≈ 20.5

2. 2

   Find the mean of grouped data 0-20: 4, 20-40: 10, 40-60: 6.

   Answer: ____________________

3. 3

   Find the mean of grouped data 0-6: 1, 6-12: 4, 12-18: 3, 18-24: 2.
   1. A) mean ≈ 12.6
   2. B) mean ≈ 3
   3. C) mean ≈ 31.5
   4. D) mean ≈ 10

4. 4

   Find the mean of grouped data 0-2: 6, 2-4: 9, 4-6: 5.

   Answer: ____________________

5. 5

   Find the mean of grouped data 0-9: 4, 10-19: 7, 20-29: 6, 30-39: 3.
   1. A) mean ≈ 18.5
   2. B) mean ≈ 20
   3. C) mean ≈ 4.5
   4. D) mean ≈ 92.5

6. 6

   Find the mean of grouped data 40-50: 3, 50-60: 7, 60-70: 12, 70-80: 6, 80-90: 2.

   Answer: ____________________

7. 7

   Find the mean of grouped data 1-5: 3, 6-10: 8, 11-15: 6, 16-20: 3.
   1. A) mean ≈ 20
   2. B) mean ≈ 10.3
   3. C) mean ≈ 3
   4. D) mean ≈ 51.25

8. 8

   Find the mean of grouped data 0-10: 2, 10-20: 7, 20-30: 9, 30-40: 5, 40-50: 3.

   Answer: ____________________

9. 9

   Find the mean of grouped data 60-69: 2, 70-79: 6, 80-89: 9, 90-99: 4.
   1. A) mean ≈ 21
   2. B) mean ≈ 64.5
   3. C) mean ≈ −81.6
   4. D) mean ≈ 81.6

10. 10

    Find the mean of grouped data 0-1: 5, 1-2: 8, 2-3: 4, 3-4: 3.

    Answer: ____________________