The following scatterplot shows the percentage of the vote a candidate received in the 2004 senatorial elections according to the voter’s income level based on an exit poll of voters conducted by CNN

The following scatterplot shows the percentage of the vote a candidate received in the 2004 senatorial elections according to the voter’s income level based on an exit poll of voters conducted by CNN. The income levels 1-8 correspond to the following income classes: 1=Under $15,000; 2=$15-29,999; 3=$30-44,999; 4= $45-59,999; 5=$60-74,999; 6=$75-89,000, 7=$90-104,999; 8=$105,000 or more.

Use the election scatterplot to determine whether there is a correlation between percentage of vote and income level at the 0.01 significance level with a null hypothesis of ρS= 0.

 

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