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Reliability - concerned with repetition. Validity - whether the experimental method is correct and if all variables (except for independent) has been kept constant. Accuracy - basically use of particular equipment (instead of indicator, using a pH meter) and having minimal errors.

85

nah too high

Probably 74-78

Do you have any idea of what raw mark you got?

Generally around 65 - Yes difficulty of exams alter the raw mark cut off, however not significantly (probably 1-2 marks). Last years exam wasn't difficult, question 16 was very doable, however some questions in the middle may have been weird to some.

hahaha how many downloads?

That's why you do 10 units, with 4u math. hahaha

It's when the market fails

nah you also need the extra 5 marks

You don't. haha jokes

Use arial and italics

Arial

ooo What do you think the question would focus on?

All chemicals used in the experiment are toxic

82-85?

85

Well the term schoolies is often concerned with going to QLD.

Yes! :O hahaha

Obviouslyy, marking criteria has coherent structure/concise. But you have to talk about everything related to the question