Lesson hub

## Can't find the answer? Try online tutoring We have the UK’s best selection of online tutors, when and for how long you need them.

Getting 1-on-1 support is cheaper than you might think.

### Participating users

Welcome to our free-to-use Q&A hub, where students post questions and get help from other students and tutors.

You can ask your own question or look at similar Computing questions.

Hi Hen,

Sorry for late reply and thank you so much for help

I think I can help!

the images you attached were very helpful.

in calculating the AP, the number 1 is because as we move along the list of results, the first number was Relevant, so at this point the number of relevant outcomes, divided by the total number examined so far is 1/1 = 1

the next number s 2/3.  this is because the next time we come across a Relevant outcome we are on the 3rd term.  the 2 represents the number of Relevants which has come up so far and the 3 represents how many terms have been looked at so far.  and so on.

does this help?

may I ask where you are studying?   