Volkodav Vladyslav. Comparative Analysis of Quantitative and Qualitative Research Methods in Digital Product Design: Metrics, Data Validity, and Impact on Product Decisions. IJC [Internet]. 2025 Jan. 3 [cited 2026 Jan. 9];56(1):309-20. Available from: https://ijcjournal.org/InternationalJournalOfComputer/article/view/2486