If a kid scores in the top 5% humanities, top 10% maths and top 25% writing in the Acer scholarship exam for year 7 can you extrapolate that to an approximate percentile equivalent ?
initially I thought top 25% for writing was not very good but then I realised that if only the top 15% of kids sit the scholarship exam and a kid scores in the top 25% of that group, then that equates to top 95th percentile of the the general population (100% -(15%x25%)) which is actually a fantastic result
and top 5% equates to top 99.25th percentile 100-(5%x15%))
is that calculation correct or am I making an error somewhere?
do you think the kids that sit the scholarship test would be mostly top 10%, 15% or 20%?
initially I thought top 25% for writing was not very good but then I realised that if only the top 15% of kids sit the scholarship exam and a kid scores in the top 25% of that group, then that equates to top 95th percentile of the the general population (100% -(15%x25%)) which is actually a fantastic result
and top 5% equates to top 99.25th percentile 100-(5%x15%))
is that calculation correct or am I making an error somewhere?
do you think the kids that sit the scholarship test would be mostly top 10%, 15% or 20%?
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