Read and compare displays and interpret evidence for a class investigation.
Free examples and worked answers. No account needed.
Practise the method.
Read and compare displays and interpret evidence for a class investigation.
Read and compare displays and interpret evidence for a class investigation.
Example 1
Our class surveyed every class member once to choose one activity. Which conclusion follows from the results?
Class activity surveyView data table
Activity
Students
Art
7
Music
5
Games
12
Show worked answer
Answer: Games received the most votes in our class
Games has 12 votes, more than Art (7) and Music (5).
The investigation asked this class, so the conclusion is about this class.
Example 2
Our class surveyed every class member once to choose one activity. Which conclusion follows from the results?
Class activity surveyView data table
Activity
Students
Art
8
Music
6
Games
11
Show worked answer
Answer: Games received the most votes in our class
Games has 11 votes, more than Art (8) and Music (6).
The investigation asked this class, so the conclusion is about this class.
Example 3
The bar chart records Art 6, Music 5 and Games 11. A proposed picture graph uses one star for 2 students, with 6 Art stars, 5 Music stars and 11 Games stars. Does it show the same data?
Class activity surveyView data table
Activity
Students
Art
6
Music
5
Games
11
Show worked answer
Answer: No, the star key would make every count twice as large
Apply the picture graph key to the number of stars: its counts would be 12,10,22.
These counts are double the original counts, so the displays do not match.
Put it into practice.
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