11:14 the units was hPa. I wanted to ask where we can revise all of the units of different things that can be tested, is there a revision sheet for that or something? cant be loosing out on an easy 1 marker Please let me know :)
hello, great videos. love them they are short and precise . for qn 5 what is the best way to know which mean to put in your null and alternative hypothesis. i always interchange them then lose like 3 marks which is alot.
hi sir for question 5d, can i write the distribution as X ~ N instead of X with the bar thing on top? would i loose marks if i do not do X with the bar thing on top?
If you look at the markschemes, u will gain credit for anything which rounds to the 3.sf answer. [This I what awrt stands for] So u can answer to 3.sf as it recommends on the front of the paper. But generally just do 4 s.f or more so there aren't rounding errors for subsequent calculations.
14:02 the working out for standard deviation showed u used the sum of y squared, why dont we used sum of x squared? isnt the question referring to Daily Mean Pressure, which represents x ?
