Gaol, Hye-Won, 2012, A Linear Regressional Analysis of Pith-Its in English, Linguistic Research 29(1), 21-44. Building up on Choi`s (2011) research that identifies the features of the instrument-taking predicates that influence the presence of instrument with-PPs, the current study explores to analyze the BYU-BNC corpus data of instrument with-PPs with a linear regression model. By building a multiple linear regression model which can deal with identified predictor variables simultaneously, this paper tries to explain the frequencies of instrument with-PPs and their nature of argumenthood by combinations of predictor variables. This modeling analysis can be a useful step toward studying gradient argumenthood via a more complex evaluation of a variety of morphological, syntactic, and semantic factors.