A class of statistics students, studying correlation, obtains data by completing a questionnaire and by reference to a register. They use the data collected to practice their calculations.

A student calculates that the product moment correlation coefficient for the class is:

1.17 between average journey time to school and distance travelled.

-0.34 between height and weight.

0.75 between marks in the last test and number of days absent last term.

For each calculation, state giving a reason, whether the result is probably correct, probably incorrect or definitely incorrect.