CAIE S2 2015 June — Question 1

Exam BoardCAIE
ModuleS2 (Statistics 2)
Year2015
SessionJune
TopicData representation
TypeSelect random sample using random numbers

1 Jyothi wishes to choose a representative sample of 5 students from the 82 members of her school year.
  1. She considers going into the canteen and choosing a table with five students from her year sitting at it, and using these five people as her sample. Give two reasons why this method is unsatisfactory.
  2. Jyothi decides to use another method. She numbers all the students in her year from 1 to 82 . Then she uses her calculator and generates the following random numbers. $$231492 \quad 762305 \quad 346280$$ From these numbers, she obtains the student numbers \(23,14,76,5,34\) and 62 . Explain how Jyothi obtained these student numbers from the list of random numbers.