Question 2:

Economists generally believe that poverty has a negative impact on the crime rate. An expert on crime rates has collected the following on five cities:

City	Crime Rate	Poverty Rate
1	10	5
2	19	7
3	20	11
4	16	8
5	15	9

Crime rate stands for the number of crimes per 10,00 people. The poverty rate is the percent of families below the poverty line.Sample statistics based on these data:

1. Compute
   

EX EX EYEY' EXY