Statistics 7a: 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. Look at this pictogram.

Which of the following statements is incorrect?

  A   Soccer is the most popular
sport		   B   3 people chose hockey
  C   Swimming is the least
popular sport		   D   7 people chose tennis
     
2. This pie chart shows the distribution of fruit trees in an orchard.

48 trees were planted.
If 
1
 of them are pear trees, how many plum trees are there?
6

  A     B     C     D  
8
12
28
30
    
3. This bar chart shows the number of cars by colour in the car park yesterday.

How many cars were in the car park?

  A     B     C     D  
5
12
42
54
    
4. Look at this dotplot showing the scores in a geography quiz.

How many pupils entered the quiz?

  A     B     C     D  
16
20
26
28
    
5. Look at this stem and leaf plot.

What is the difference between the highest and the lowest scores?

  A     B     C     D  
9
16
18
28
    
6. This stacked bar chart shows the sales of tickets for 3 cricket matches.

What is the difference in attendance between Match 3 and Match 1?

  A     B     C     D  
25
8
33
43
    
7. These two dotplots show the results of a memory test for some pupils in Year 7.

What is the difference between the lowest female score and the highest male score?

  A     B     C     D  
19
17
14
1
    
8. This back to back stem and leaf diagram shows the results of a second memory test for some pupils in Year 7.

What is the sum of the 3rd highest female score and the 2nd highest male score?

  A     B     C     D  
66
64
62
21
    
9. This graph shows the temperature in a seaside town on a day in September.

For how many hours was the temperature above 15°C?

  A     B     C     D  
5
6
7
8
    
10. These time series graphs show a household's electricity and water costs over a year.

Which of the these statements is false?

  A   The electricity bill was most
expensive in December.		   B   From March to July the
water bill increased.
  C   The electricity bill is most
expensive in the summer.		   D   The water bill is most
expensive in the summer.
     
11. This graph shows the number of hours slept by children of different ages?

What type of correlation does this show?

  A   Positive correlation   B   Negative correlation
  C   No correlation   D   Mixed correlation
     
12. Which of these statements is an example of positive correlation?

  A   The healthier you are the
longer you live.		   B   The more exercise you
take the more your
weight decreases.
  C   The longer the race the
greater your speed
decreases.		   D   As you gain altitude the
temperature falls.
     
For Questions 13 and 14, you will need to answer them using paper and pencil and then click the 'Check' button to see if you have done them correctly.
13. Top Gear is a TV programme aimed at car enthusiasts. Following a change in format and presenters for Series 23, the viewing figures have dropped dramatically. The figures shown below are for UK viewers (in millions) and cover the first six episodes of series 23 and the last six episodes of Series 22. (Data is taken from Wikipedia)

Episode
1
2
3
4
5
6
2016 UK viewers
(millions)
6.424.063.443.223.572.62
2015 UK viewers
(millions)
6.146.246.046.155.846.92

Represent this data on a suitable broken line graph and make two relevant observations about the data.
14. In F1 Motor racing, the grid position (starting position) is very important as overtaking can be difficult. The data below is taken from the German Grand Prix in July 2016.

Starting
position
2341658127
9
Finishing
position
1234567
8
910

Plot a scatter graph to represent this data and decide if there is a connection between the starting position and the finishing position.
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