Four methods of statistics and data mining such as regression analysis

principal component analysis

association rules

and cart

chaid

quest decision tree algorithms have been applied to analyze the college nursing students' scores to comprehensively study the nursing course correlation as well as the impact on the students' quality. Combination methods of statistics and data mining

which has complementary advantages

can discover more information such as courses correlation and effect degree of courses on students of different levels etc. Besides

it helps educational administration personnel to set curriculum scientifically

strengthen the communication among the teachers from dif-ferent department and improve students' study efficiency.