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    Higher level maths interquartile ranges? JessicaA

    I'm finding difficulty solving for the interquartile ranges can anyone help me wit exam papers or something plz?

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      Study2000

      I can help u with any exam paper question. Just type it here and i will give u a step by step answer!

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      Study2000

      Interquartile Range Example:

      5,3,9,8,7,1,2,3

      1- Put the numbers in order: 1,2,3,3,5,7,8,9

      2- 1/4 multiplied by the amount of numbers there are: 1/4 multiplied by 8

      3- 1/4 multiplied by 8 is 2.

      4- Because the answer is even (2) u will take the 2nd and 3rd number and add them and divide by 2. If number was (2.5 or 3.7 or anything that is not a whole number) round up. So if number was 3.7 u will get the 4th number in the list of number.

      5- 2+3=5. 5/2= 2.5. 2.5 is your lower quartile (Q1)

      6- Now get 3/4 of the numbers.

      7- 3/4 multiplied by 8 = 6

      8- Get 6th and 7th number and again divide by 2.

      9- 7+8 = 15. 15/2 = 7.5 . 7.5 is your upper quartile (Q3)

      10- Finally (Q3) 7.5 - (Q1) 2.5. Answer is 5

      Hope this helps:)

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      JessicaA

      Thx so much that really hepled

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      Study2000

      No problem:)

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      KxngOfDeezNuts

      What paper and question was that @study200

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      Me

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