General Thoughts: Mathematics Extension 1 (1 Viewer)

[Zen2613]

If they were prepared they would have known that to get rid of odds you let x=-1 , pretty common textbook questions to multiply everything by x too, and yeah I can understand, considering I read somewhere that the median atar in some year was 69

How can the average atar be 69 ? I don't get it, the atar is a rank against everyone in the state, so shouldn't it be exactly 50 ?

 

[Zen2613]

If they were prepared they would have known that to get rid of odds you let x=-1 , pretty common textbook questions to multiply everything by x too, and yeah I can understand, considering I read somewhere that the median atar in some year was 69

How can the average atar be 69 ? I don't get it, the atar is a rank against everyone in the state, so shouldn't it be exactly 50 ?

 

[thomasdo1]

How can the average atar be 69 ? I don't get it, the atar is a rank against everyone in the state, so shouldn't it be exactly 50 ?

http://m.smh.com.au/national/tertia...ds-up-to-relative-mystery-20131218-2zlhb.html

this particular year was 67 for boys

 

[InteGrand]

How can the average atar be 69 ? I don't get it, the atar is a rank against everyone in the state, so shouldn't it be exactly 50 ?

Does it have anything to do with <30 ATAR's not counting to the calculation of the median?

 

[HecticSandWitch]

Does it have anything to do with <30 ATAR's not counting to the calculation of the median?

It is your cohort from year 7, so it counts all the people who have dropped out.

 

[Zen2613]

It is your cohort from year 7, so it counts all the people who have dropped out.

Ahh i see, making 99.95s just that bit easier to get !