Question 1

It has been found that the number of ‘smart kids’ – 12 year olds who score more than 95% of their peers on mandatory school exam – has increased steadily over the last 5 years. Which of the following can be concluded based on the above statements?

A

There has been an improvement in primary education over the last 5 years

B

The number of ‘non-smart’ kids has decreased over the last 5 years

C

The number of kids taking the mandatory school exam has increased over the last 5 years

D

The number of smart kids has increased as a percentage of the total population of the country

Explanation

If there are 100 kids taking an exam, the number of students who scored more than 95% of their peers will be 5. If the total number of test-takers increases, then the number of people who scored more than 95% of their peers also increases. So, if the number of 12 year olds who scored more than 95% of their peers has increased, it means that the number of overall test-takers has increased. So, the conclusion that can be drawn from the above statements is that the number of kids taking the mandatory school exam has increased over the last 5 years. Option c) is the correct answer
please state assumption , inference clearly on this ques .