You are interested in attempting to replicate the results of a 1973 study by Belmont and Marolla that found a negative correlation between birth order and IQ.You collect the necessary data using students in your school's participant pool.Which technique would you use to analyze your data?
A) Spearman rank-order correlation coefficient
B) Pearson correlation coefficient
C) Mann-Whitney U test
D) Kruskal-Wallis H test

Question

Quizplus · Accepted Answer

Spearman rank-order correlation coefficient is used to measure the monotonic relationship between two variables, which is appropriate for ordinal data like birth order and IQ.

You Are Interested in Attempting to Replicate the Results of a 1973