PSU's Christmas-folklore-slash-research-methods Festive Crossword

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Across
  1. 4. Degree of association, for instance between behaviour of children and quality of presents
  2. 5. Santa found kissing Mrs Claus under this
  3. 8. Average. Scrooge was this.
  4. 9. A form of sampling, as well as a cold projectile
Down
  1. 1. Reindeer - one with, presumably, a normal coloured nose
  2. 2. There's a 95% chance this years' presents will be better than last years'
  3. 3. Tend not to vote for Christmas
  4. 6. Makers of toys
  5. 7. Santa's Procedure for Stuffing Stockings
  6. 10. Distribution which looks like a jingle bell