The test was easy although there were a few questions i was uncertain about, overall the grade boundaries should be moderate. Waiting for the unoffical markscheme now.
The test was easy although there were a few questions i was uncertain about, overall the grade boundaries should be moderate. Waiting for the unoffical markscheme now.
That standard deviation question got me so confused. I substituted everything into the equation like normal but I didnt get 0.4. I literally tried everything! The closest i got was 0.7
I got it, you had to square EVERY number in the set of numbers individually, and add them up for total of one of them and sub into equation with n as 12