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Ella carries out a survey on the 25 students in her class to see how many use Spotify (S) and how many use Netflix (N) - Junior Cycle Mathematics - Question 4 - 2018
Question 4
Ella carries out a survey on the 25 students in her class to see how many use Spotify (S) and how many use Netflix (N). Some of her results are shown in the bar char... show full transcript
Worked Solution & Example Answer:Ella carries out a survey on the 25 students in her class to see how many use Spotify (S) and how many use Netflix (N) - Junior Cycle Mathematics - Question 4 - 2018
Step 1
Use the results shown to complete the bar chart
Answer
To complete the bar chart:
- Spotify only: 3 students used only Spotify.
- Netflix only: 4 students used only Netflix.
- Spotify and Netflix: 10 students used both services.
- Neither Spotify nor Netflix: 8 students did not use either service.
Thus, the completed bar chart will show:
- Spotify only: 3
- Netflix only: 4
- Spotify and Netflix: 10
- Neither: 8
Step 2
Use the results shown to complete the Venn diagram
Answer
In the Venn diagram:
- The section representing Spotify only will have 3.
- The section representing Netflix only will have 4.
- The overlapping section that shows students using both services (Spotify and Netflix) will be 10 students.
- The area outside both circles that represents neither service will indicate 8 students.
So, the completed Venn diagram will have:
- S (Spotify only): 3
- N (Netflix only): 4
- Intersection (Spotify and Netflix): 10
- Outside (Neither): 8
Step 3
Step 4