What does quite mean in these sentences? Choose the right meaning.

1. It's quite cold. You'd better wear your coat.

2. 'Are you sure?'  'Yes, quite sure.'

3. Anna's English is quite good.

4. I couldn't believe it. It was quite incredible.

5. My bedroom is quite big.

6. I'm quite tired. I think I'll go to bed.

7. I quite agree with you.