Apolitical scientist wants to establish a link between the approval rating for a certain state governor's office and the state's unemployment rate. below is data listing both the approval rating and the unemployment rate over 30 years. use excel to calculate the correlation coefficient r between the two data sets. round your answer to two decimal places.

col1 unemployment: 3.9 3.1 4 4.7 5.4 5.9 8 6.1 7.6 5.5 7.2 5.5 4.2 5.5 5.1 7.9 7.6 5.6 7.2 5.7 4 7.2 5.5 4.3 5.8 5 8.3 4.9 4.9 5.5
col2 approval rating: 38 32 64 59 73 40 57 45 35 60 54 37 53 54 45 32 51 51 36 58 55 39 54 54 46 31 52 52 38 32