Question commentary

Question Inspired by Contents
Qn 2201 - Basic techniques:
  • table of outcomes
  • permutations and combinations
  • tree diagram
  • Venn diagram
Qn 2202 2007 P2 Q10 Tree diagram:
  • additional and multiplication of probabilities
  • conditional probabilities
  • complements
Qn 2203 2010 P2 Q7 Venn diagram:
  • conditional probabilities
  • independent events
  • range of probabilities

The main idea missing from our collection of questions are questions involving an unknown general probability, as seen in 2012 P2 Q5.

Other ideas that should be further explored include the link to the other topics, including permutations and combinations, the binomial distribution and the normal distribution.

TYS analysis

Year Question Math Atlas Comments
2007 P2 Q10 Qn 2202 Tree diagram. Qn 2202 is directly inspired by this question
2008 P2 Q7 Qn 2202 Tree diagram. Qn 2202 is directly inspired by this question
2009 P2 Q7 Qn 2201
Qn 2202 		Tree diagram. This question also explored the use of an unknown probability, masked conditional probabilities, using differentiation to explore the increasing/decreasing functions and relating probabilities to context. This should be further explored in the future.
2010 P2 Q7 Qn 2203 Venn diagram. Qn 2203 is directly inspired by this question
2011 P2 Q9 Qn 2201
Qn 2202 		Tree diagram.
2011 P2 Q11 Qn 2102
Qn 2201 		This question shares some similarity with Qn 2102, but the ideas will probably be further explored in a future question on the DRV topic
2012 P2 Q5 Qn 2202 Tree diagram. The use of a unknown probability should be further explored.
2012 P2 Q7 Qn 2103
Qn 2201 		Permuations and combinations.
2013 P2 Q8 Qn 2201 Venn diagram.
2013 P2 Q11 - Permutations and combinations. This question type should be further explored in the future.
2014 P2 Q10 - Permutation and combinations. This question type should be further explored in the future.
2015 P2 Q9 Qn 2203 Venn diagram. Qn 2203 is directly inspired by this question
2016 P2 Q5 Qn 2203 Tree diagram. This question type should be further explored in the future.
2017 Specimen
P2 Q8 		- This question type should be further explored in the DRV topic.
2017 P2 Q6 Qn 2103 This question shares some similarity with Qn 2103, but the ideas should be further explored
2018 P2 Q7 Qn 2203 Venn diagram. Qn 2203 is directly inspired by this question
2019 P2 Q8 Qn 2201 Permutations and combinations, table of outcomes. The ideas in this question should be further explored.
2020 P2 Q6iv Qn 2202 Tree diagram (linked with normal distribution)
2020 P2 Q9iv - Tree diagram (linked with binomial distribution). This should be further explored in the future.