El Nino and the monsoon. The earth is interconnected. For example it appears that El Nino, the periodic warming of the Pacific Ocean west of South America, affects the monsoon rains (in millimeters) for the 23 strong El Nino years between 1871 and 2004.

628 669 740 651 710 736 717 698 653 604 781 784 790 811 830 858 858 896 806 790 792 957 872

a)To make a stemplot of these rainfalls amounts, round the data to the nearest 10, so that stems are hundreds of millimeters and leaves are tens of millimeters. Make two stemplots, with and without splitting the stems.

b) Describe the shap, center and spread of the distribution.

c) The average monsoon rainfall for all years from 1871 to 2004 is about 850 millimeters. What effect does El Nino appear to have on monsoon rains?