Hey guys
Basically,I just want to know HOW the difference tables work. Let me give an example:
My Z value came to 0.3846, and so did the mark scheme's. Then, when I went to the tables, I looked at 0.38, which is 0.6480, and added the value at 5 as i thought 0.0046 should be rounded. That gave an overall value of 0.6499.
The mark scheme, however, had the same result as me (0.3846) for Z, yet had 0.6497- there isnt even a 17 value in the differences table!