The answer is r = -0.9853 or -0.985
It's calculated as
r = -108.2 / √((132.8)(90.8)) = -0.9853
Set your calculator to REG then LIN. Input the data as 5,19 then press M+. Continue doing this until the last data. To find r, press SHIFT then number 2 and look for r value. You can only follow this procedure if we have the same calculator. You can use an online calculator also in finding r. in socscistatistics (dot) com. Refer to the attached picture for the graph, values, and computation.
