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In the USA, 2.7 million people admitted using illegal drugs - Edexcel - GCSE Biology - Question 2 - 2012 - Paper 1
Question 2
In the USA, 2.7 million people admitted using illegal drugs. The pie chart shows the percentage of these people using different illegal drugs. (a) (i) Calculate th... show full transcript
Worked Solution & Example Answer:In the USA, 2.7 million people admitted using illegal drugs - Edexcel - GCSE Biology - Question 2 - 2012 - Paper 1
Step 1
(i) Calculate the number of people who admitted using marijuana illegally.
Answer
To find the number of people who admitted using marijuana illegally, we can use the percentage provided in the pie chart. The percentage of individuals using marijuana is 56%.
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Calculate the number of people:
The total number of people who admitted using illegal drugs is 2.7 million.
Therefore, the calculation is:
ext{Number of marijuana users} = 2.7 ext{ million} imes rac{56}{100} = 1.512 ext{ million people}Thus, 1.512 million people admitted using marijuana illegally.
Step 2
(ii) Suggest one reason why the information in the pie chart may not be reliable.
Answer
One reason the information in the pie chart may not be reliable is that not every person was questioned. Additionally, respondents may not provide accurate information; for example, they might be dishonest about their drug use or may have taken more than one type of drug. Furthermore, the reference date when the data was collected may not be relevant anymore.