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Could You Actually Pass GCSE Stats Now?

You can use a calculator – it's pretty hard. Questions adapted from AQA "Statistics and Number" past papers.

  1. ThinkStock / BuzzFeed
    Correct! 
    Wrong! 

    A quarter of the balls are green, so 25 greens. There are twice as many blues as greens, so 50 blues. There are one-fifth as many reds as blues, so 10 reds. Add them together and you get 85, so the remaining 15 must be white.

    Via ThinkStock
  2. ThinkStock / BuzzFeed
    Correct! 
    Wrong! 

    1430 - 1250 = 180. 180 ÷ 1250 = 0.144. 0.144 x 100 = 14.4.

  3. ThinkStock
    Correct! 
    Wrong! 

    28 ÷ 40 = 0.7.

  4. ThinkStock / BuzzFeed
    Correct! 
    Wrong! 

    You'd expect 7 out of 10 reds to give a relative frequency of 0.7.

  5. Correct! 
    Wrong! 

    You multiply the ratios together, so it's (10 x 5) : (5 :4), or 50 : 36. Then you need to see if both sides can be divided by anything to give you the simplest version. In this case, dividing them both by 2 gives you 25 : 18.

  6. ThinkStock / BuzzFeed
    Correct! 
    Wrong! 

    The way to work it out is 9,000 ÷ 1.05^3 = 7,774.54.

  7. ThinkStock / BuzzFeed
    Correct! 
    Wrong! 

    24 ÷ 40 = 0.6, so less than 2/3rds.

  8. ThinkStock / BuzzFeed
    Correct! 
    Wrong! 

    There are three possible "starter and main" combinations, and six possible "main and dessert" combinations, for a total of nine.

  9. ThinkStock / BuzzFeed
    Correct! 
    Wrong! 

    There are nine possible combinations; three of them include jelly.

    So it's 3/9 or 1/3.

  10. ThinkStock / BuzzFeed
    Correct! 
    Wrong! 

    You know that spruce trees + pine trees + 2 = fir trees. 27 fir trees and 16 pine trees have been sold. So 27 - 26 - 2 = 9.

  11. ThinkStock / BuzzFeed
    Correct! 
    Wrong! 

    The correct answer is 437,062, or 4.4 x 10^5.

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