The prevalence and patterns of knee injuries among women collegiate rugby players were investigated using a sample questionnaire, to which 42 rugby clubs responded.20 A total of 76 knee injuries were classified by type as well as the position (forward or back) of the player.

Chi-Square Test: Men Tear, MCL Tear, ACL Tear, Patella, PCL Tear
Expected counts are printed below observed counts
Chi-Square contributions are printed below expected counts

Chi-Sq = 3.660, DF = 4, P-Value = 0.454
4 cells with expected counts less than 5.0
a. Use the MINITAB printout to determine whether there is a difference in the distribution of injury types for rugby backs and forwards. Have any of the assumptions necessary for the chi-square test been violated? What effect will this have on the magnitude of the test statistic?
b. The investigators report a significant difference in the proportion of MCL tears for the two positions (P

Transcribed Image Text:

Type of Knee Injury Meniscal MCL CL Patella PCL Tear Tear Dislocation Tear Position Tear orward 13 Back 14 14 Men Tear XCL Tear ACL Tear Patella POL Tear Total 39 13 12.50 D. 020 14 11.50 D.543 10.50 1167 0.100 0.000 2.50 1.00 12 12.50 D.020 38 11.50 D.543 10.50 1.167 .100 0.000 2.50 1..00 Total 25 23 21 76