Here are some examples of quantitative research titles:

• "Statistical Analysis of Supply Chain Disruptions on Retail Sales"
• "Quantitative Examination of Consumer Loyalty Programs in the Fast Food Industry"
• "Predicting Stock Market Trends Using Machine Learning Algorithms"
• "Influence of Workplace Environment on Employee Productivity: A Quantitative Study"
• "Impact of Economic Policies on Small Businesses: A Regression Analysis"
• "The Effects of Social Media on Self-Esteem Among Teenagers"
• "A Comparative Study of Academic Achievement Among Students of Single-Sex and Co-Educational Schools"
• "The Relationship Between Unemployment and Inflation Rates"
• "What Are the Risks Associated with Confidential Data Storage?"
• "The Impact of the Up-gradation of Technologies on Relationships"

These titles were found in various sources, including, , , , and. When writing a quantitative research title, it should be concise, informative, and accurately represent the main focus of the study. It should include the research topic, variables, and research design or method used.