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Using the largest single-survey sample of Type Ia supernovae (SNe Ia) todate, we study the relationship between properties of SNe Ia and those of theirhost galaxies, focusing primarily on correlations with Hubble residuals (HR).Our sample consists of 345 photometrically-classified orspectroscopically-confirmed SNeIa discovered as part of the SDSS-II SupernovaSurvey (SDSS-SNS). This analysis utilizes host-galaxy spectroscopy obtainedduring the SDSS-I/II spectroscopic survey and from an ancillary program on theSDSS-III Baryon Oscillation Spectroscopic Survey (BOSS) that obtained spectrafor nearly all host galaxies of SDSS-II SN candidates. In addition, we usephotometric host-galaxy properties from the SDSS-SNS data release (Sako et al.2014) such as host stellar mass and star-formation rate. We confirm thewell-known relation between HR and host-galaxy mass and find a 3.6{\sigma}significance of a non-zero linear slope. We also recover correlations betweenHR and host-galaxy gas-phase metallicity and specific star-formation rate asthey are reported in the literature. With our large dataset, we examinecorrelations between HR and multiple host-galaxy properties simultaneously andfind no evidence of a significant correlation. We also independently analyzeour spectroscopically-confirmed and photometrically-classified SNe Ia andcomment on the significance of similar combined datasets for future surveys.

SDSS-II Supernova Survey: An Analysis of the Largest Sample of Type Ia Supernovae and Correlations with Host-Galaxy Spectral Properties