ABSTRACT
This chapter discusses the considerable and increasing interest in quantitative research methods within the field of applied linguistics. Topics include statistical literacy among researchers and graduate students, study reproducibility, replication and transparency as key aspects of the open science movement, and methods of discerning meaningful patterns and differences in quantitative data by using data visualization, effect sizes, confidence intervals, Bayesian statistics, in addition to null hypothesis significance testing. Critiques of current statistical practices in the field and suggestions for improving quantitative methodology will be considered.
