1 The table shows, for each of a random sample of 8 paperback fiction books, the number of pages, \(x\), and the recommended retail price, \(\pounds y\), to the nearest 10 p.
| \(\boldsymbol { x }\) | 223 | 276 | 374 | 433 | 564 | 612 | 704 | 766 |
| \(\boldsymbol { y }\) | 6.50 | 4.00 | 5.50 | 8.00 | 4.50 | 5.00 | 8.00 | 5.50 |
- Calculate the value of the product moment correlation coefficient between \(x\) and \(y\).
- Interpret your value in the context of this question.
- Suggest one other variable, in addition to the number of pages, which may affect the recommended retail price of a paperback fiction book.
- The same 8 books were later included in a book sale. The value of the product moment correlation coefficient between the number of pages and the sale price was 0.959 , correct to three decimal places.
What can be concluded from this value?