A study reported in the Journal of the American Medical Association investigated the cardiac demands of heavy snow shoveling.Ten healthy men underwent exercise testing with a treadmill and a cycle ergometer modified for arm cranking.The men then cleared two tracts of heavy, wet snow (ouch!) using a lightweight plastic snow shovel and an electric snow thrower.Each subject's heart rate was recorded under the 4 exercise modes.The Excel spreadsheet provides the heart rates for ten subjects under the 4 exercise modes.

What is the CORRELATION between the readings for the 10 subjects for the following two exercise modes:

- Correlation between the arm crank ergometer and the snow thrower readings?