1. The cost of output at a factory is thought to depend on the number of units produced. Data have been collected for the number of units produced each month in the last six months, and the associated costs, as follows. Month Output Cost '000s of units $'000 x Y 1 2 9 2 3 11 3 1 7 4 4 13 5 3 11 6 5 15 Required Assess whether there is any correlation between output and cost