A math teacher compared two methods for teaching division to his students. She randomly assigned 60 students into two equal-sized groups. Group 1 was taught with Method A using an innovative and technology-based method, and Group 2 with Method B using traditional textbook oriented methods. A comparison of post-test scores indicated that the results were significantly different (p =.03) in favor of Method A. When the teacher examines the mean scores of the two groups, the difference was 5.5 points on a 100-point scale and the pooled standard deviation is SD=10. The math teacher used the p value to determine the difference in test scores between these two groups of students. p value in this example is:

A Descriptive statistic

B measure of variability

C Inferential statistic

D measure of central tendency