the question is "The u. s census bureau serves as the leading source of quantitative data about the nations people and economy. The following dataset contains 45 records for the number of households (1000s) and the household income by the highest level of education for the head of household (u.s census bureau website, 2013). only households in which the head has a high school diploma or more are included. Is there any evidence of a relationship between highest level of education and household salary?

Respondant Education Level Salary Category 1 Doctoral Degree $100,000 or more 2 High School Graduate $100,000 or more 3 Bachelor's Degree $25,000-$49,999 4 Bachelor's Degree $100,000 or more 5 High School Graduate $100,000 or more 6 High School Graduate $25,000-$49,999 7 High School Graduate $50,000-$100,000 8 Doctoral Degree $50,000-$100,000 9 High School Graduate