Statistics 7b: Mastery Questions
Guidance Notes - To answer each question, click on the letter that corresponds to the correct answer. You then need to click the 'Check' button to see if you are correct. If your answer is incorrect, you will be given a hint on how to get the correct answer. You then need to click the 'Try again' button to attempt the question once more.
1. What is the mean of these 5 numbers:

9, 16, 15, 7, 13?

  A     B     C     D  
13
15
60
12
    
2. The mean age of 4 players in a 5-a-side team is 17.
If the 5th player is 22, what is the mean age of the whole team?

  A     B     C     D  
17
18
19
20
    
3. What is the median of these 5 numbers:

9, 16, 15, 7, 13?

  A     B     C     D  
13
15
60
12
    
4. What is the median of this dataset:

7, 8, 5, 5, 9, 6, 8, 8, 7?

  A     B     C     D  
9
7
8
5
    
5. What is the mode of this dataset:

7, 8, 5, 5, 9, 6, 8, 8, 7?

  A     B     C     D  
9
7
8
5
    
6. What is the range of this dataset:

7, 8, 5, 5, 9, 6, 8, 8, 7?

  A     B     C     D  
4
0
9
5
    
7. Which of these datasets has a mode of 6?

  A  
4, 3, 6, 7, 3
   B  
3, 4, 3, 6, 6
  C  
7, 6, 6, 6, 4
   D  
3, 4, 6, 9, 9
    
8. This table shows the summary statistics of groups 7X and 7Y in a recent science assessment.

 Mean 
 Range 
  7X  
55
45
7Y
52
30

Which group were the more consistent in their scores?

  A  
7X because their range
was greater.
   B  
7X because their mean
was higher.
  C  
7Y because their range
was lower.
   D  
7Y because their mean
was lower.
    
9. Jess chose 5 different positive integers and said that their mean was 8.
What was the highest number Jess could have chosen?

  A     B     C     D  
40
30
36
28
    
10. Jamie's overall score in Science was 34.
This was the mean of his scores in his Physics, Chemistry and Biology.
If he scored 35 in Physics, 32 in Chemistry, what was his Biology score?

  A     B     C     D  
34
35
36
37
    
11. The table below shows the number of tries scored by the 12 teams in Premiership Rugby matches over a particular weekend.

 Tries scored 
 Teams 
0
1
1
2
2
2
3
4
4
3

What was the mode for the number of tries scored?

  A     B     C     D  
1
2
3
4
    
12. Using the same dataset as Q11, what was the median for the number of tries scored?

  A     B     C     D  
1
2
3
4
    
13. Using the same dataset as Q11, what was the mean for the number of tries scored?

  A     B     C     D  
1.5
2
2.5
3
    
14. This stem and leaf plot gives the scores of 7Z in a Geography quiz.

What is the modal score?

  A     B     C     D  
12
2
8
18
    
15. Using the same dataset as in Q14, what was the median score?

  A     B     C     D  
12
2
8
11
    
16. Using the same dataset as in Q14, what was the mean score?

  A     B     C     D  
12
2
8
11
    
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