GA SCORE ESTIMATOR / STUDY SCORE ESTIMATOR

[Mao]

well, if you full marked everything your standard score won't be 2.00 (it'll be higher)
grab a grade distribution and see for yourself.


NOTICE: first post edited, now added SS estimator.

[AppleXY]

Extraordinary work Mao.

Pure brilliance

(now I have hope of getting 33 in eng lol)

[Mao]

Extraordinary work Mao.

Pure brilliance

(now I have hope of getting 33 in eng lol)

IN TIMES OF CONFLICT, ORDINARY PEOPLE CAN ACT IN EXTRAORDINARY WAYS. [fuck i hate english...]

[hard]

i don't know how to use it?

[NE2000]

well, if you full marked everything your standard score won't be 2.00 (it'll be higher)
grab a grade distribution and see for yourself.


NOTICE: first post edited, now added SS estimator.

Correct me if my calculations are wrong

Looking at 2007 Chemistry.
Full marks on first exam: standard score would be 1.77
Full marks on SACs: 1.49
Full marks on final exam: 1.87

I just subtracted the mean from the maximum score and then divided it by the standard deviation to find how many standard deviations from the mean the 100% was.

Based on that it is impossible to get standard score above 2 in 2007 Chemistry

btw, the calculator by grades is really quite good, at least in halting the flow of posts in the study score estimations thread

[costargh]

I dont get how to use it man!

[Mao]

well, if you full marked everything your standard score won't be 2.00 (it'll be higher)
grab a grade distribution and see for yourself.


NOTICE: first post edited, now added SS estimator.

Correct me if my calculations are wrong

Looking at 2007 Chemistry.
Full marks on first exam: standard score would be 1.77
Full marks on SACs: 1.49
Full marks on final exam: 1.87

I just subtracted the mean from the maximum score and then divided it by the standard deviation to find how many standard deviations from the mean the 100% was.

Based on that it is impossible to get standard score above 2 in 2007 Chemistry

btw, the calculator by grades is really quite good, at least in halting the flow of posts in the study score estimations thread

actually, no.

the figures VCAA give are truncated normal distributions, i.e. conditional probability need to be used. [there is a minimum and maximum]

hence, you need to

1) find the area from 0 marks to x marks
2) divide by the total area (from 0 marks to full marks)
3) multiply by the area from 0 to 50 (mean = 30, sd = 7)
4) add the tail from -infty to 0 (mean = 30, sd = 7)
5) invNorm (mean = 0, sd = 1)

that gives the standardised score for each GA

spreadsheet updated. I made an error in a formula (put - instead of + )
please download again

[costargh]

Mao, I still don't get what we're sposed to change and what's spose to remain constant. And lower /upper? lower of A+ or lower bound of all scores?

and do we put in the A+ or B+ or whatevr and the High Med or Low?  confused as hell (A)

[NE2000]

OK, I was basing my calculations on that VCAA sample calculation

[Mao]

Costa: a tutorial is up on the first post

NE2000: they didn't show calculations they just showed you the result [there is a huge jump from score to Stan. Score]

just updated... [again... i'm not very good at this ]

[NE2000]

NE2000: they didn't show calculations they just showed you the result [there is a huge jump from score to Stan. Score]

Let me rephrase. I deduced that my calculation method was how they too had worked it out given that it yielded the same results (although now that I do it again the results are only the same up to 3 decimal places, after that they diverge). But then again, I'm just a year 11

[Mao]

NE2000: they didn't show calculations they just showed you the result [there is a huge jump from score to Stan. Score]

Let me rephrase. I deduced that my calculation method was how they too had worked it out given that it yielded the same results (although now that I do it again the results are only the same up to 3 decimal places, after that they diverge). But then again, I'm just a year 11

haha, that's fair effort for a year 11 student! [are you doing MM 3/4?]

[chlloe]

Help!

Mine opens with no place to put in the details?

Im probably having a blonde moment!


Ie, this is a screen shot off all thats on the page!

[doboman]

click on the bottom tab thingys. click SS

[chlloe]

Is none.

Just a tab that says scroll lock. Is it because its open in compatibility mode in a read only file?