Hi. Can you please send the workings and answers for this question? Thank you in advance for your help.

One of the measure for personal tness is the time taken for an individual's pulse rate to return to normal after strenuous exercise; the greater the tness, the shorter the time. Ian and Imran have the same normal pulse rates. Following a short programme of strenuous exercise they both recorded their pulse rates P at the time 2' minutes after they had stopped exercising. Imran's results are given in the table below. I 0.5 1.0 1.5 2.0 3.0 4.0 5.0 P 125 113 102 94 81 83 71 3) Find the mean and standard deviation of Imran's pulse rate. [1 mark]