the qn is in a table format.

Marks 10 20 30

no. of pupils 16 10 x

(a)if the median mark is 20, find the range of x. i am not sure how to do but my ans is 9 to 16. i think i am wrong

(b)find x if the mean mark is 16. i got x=4

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- March 31st 2009, 02:17 AMhelloyingUrgent. i have test tmr.Statistics
the qn is in a table format.

Marks 10 20 30

no. of pupils 16 10 x

(a)if the median mark is 20, find the range of x. i am not sure how to do but my ans is 9 to 16. i think i am wrong

(b)find x if the mean mark is 16. i got x=4 - March 31st 2009, 05:45 AMmr fantastic
- April 1st 2009, 04:31 AMhelloying
- April 1st 2009, 04:40 AMmr fantastic