The marks obtained in a Statistics test are shown in the table below. Marks  10 – 19  20 - 29  30 - 39 40 - 49 50 - 59 60 -69  70 - 79     80 - 89 Frequency 8 9 13 18 20 15 11    6 a. Draw a suitable cumulative frequency curve for the distribution b. Using the curve, determine:        i. the median         ii. the Quartile Deviation

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The marks obtained in a Statistics test are shown in the table below.

Marks  10 – 19  20 - 29  30 - 39 40 - 49 50 - 59 60 -69  70 - 79     80 - 89
Frequency 8 9 13 18 20 15 11    6

a. Draw a suitable cumulative frequency curve for the distribution
b. Using the curve, determine:
       i. the median 
       ii. the Quartile Deviation 

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