Class of 2025 (2025 HSC CHAT) (23 Viewers)

parmesean

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ig but i just discovered both of them give u the same result so i was wondering which one was the better formula to use
whenever ur given a population / number of trials that is like NOT huge you should use the sample population formula since things act more eratically at low samples

for example if i flip a coin 20 times, theres a very low chance it behaves as a normal distribution, however if i flip it 2,000,000 times then the normal curve will come about,

so in those cases where the normal curve isnt basically guaranteed, i.e youre given a population, number of trials that satisfy

np ≥ 10 and n(1−p) ≥ 10 <--- this is not a math rule this is just a rule of thumb, itll be very clear in the HSC what they want

then u can use sample
 

bigupsanky

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whenever ur given a population / number of trials that is like NOT huge you should use the sample population formula since things act more eratically at low samples

for example if i flip a coin 20 times, theres a very low chance it behaves as a normal distribution, however if i flip it 2,000,000 times then the normal curve will come about,

so in those cases where the normal curve isnt basically guaranteed, i.e youre given a population, number of trials that satisfy

np ≥ 10 and n(1−p) ≥ 10 <--- this is not a math rule this is just a rule of thumb, itll be very clear in the HSC what they want

then u can use sample
alr bet thanks a lot
 

gossipgirllll

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do u guys think hsc markers follow ECF within the same question but not part a, b like one question like idk how to explain it but
 

parmesean

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do u guys think hsc markers follow ECF within the same question but not part a, b like one question like idk how to explain it but
they do, if you forget a square or smth early in your work but go on to use all the right working to achieve an answer, then you wont lose more than 2 for that question
 

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