WHAT IT IS
Core instruments include structured surveys (online, telephone, in-person), conjoint analysis (choice-based, adaptive), MaxDiff, experimental testing (A/B and multivariate), transactional data analysis, and mobile/app passive measurement. Sampling strategies use probability (random, stratified, cluster) or non-probability (quota, river, panel) approaches with transparent weighting.
HOW IT WORKS
Methodological rigor is governed by AAPOR, CRIC, ESOMAR 28, and ISO 20252 — covering sample frames, weighting, mode, response rates, margin of error where applicable, and reporting. Credible quant studies disclose all of these; opaque studies don't.
WHEN TO USE
Commission quantitative research when a question requires a statistically defensible answer, when segment sizes or willingness-to-pay must be estimated, when attitudes must be tracked over time, or when trade-offs need formal choice modeling.