Introduction to Quantitative Research

Foundations of Research

• Definition: Research is a systematic process of collecting, analyzing, and interpreting information ($data$) to increase understanding of a phenomenon or concern.
• What Research is Not:
  • Merely gathering information.
  • Rummaging for hard-to-locate information.
  • Transporting facts from one location to another.

The Research Cycle

• Scientific Method Recap (P-O-H-I-C):
  • $P$: Problem
  • $O$: Observation
  • $H$: Hypothesis
  • $I$: Investigation
  • $C$: Conclusion
• Six Stages of the Research Cycle:
  1. Identify the Problem: Define the issue or topic of interest.
  2. Review the Literature: Gather and evaluate information from reliable sources.
  3. Formulate a Hypothesis: Propose a testable answer.
  4. Collect & Analyze Data: Gather data and analyze it systematically.
  5. Interpret the Results: Define the data and draw conclusions.
  6. Share the Findings: Communicate results to contribute to knowledge.

Understanding Quantitative Research

• Definition: A type of research using numerical data to answer questions and solve problems. It relies on measurement, counting, and statistical analysis for objective results.
• Historical and Scientific Context: Referenced themes include COVID-19 (SARS-CoV-2), vaccines, and the Green Revolution involving Norman Borlaug.

Core Characteristics of Quantitative Research

• $01$ Objective: Conclusions are derived from factual evidence and systematic data, ensuring findings are free from personal bias.
• $02$ Clearly Defined Research Questions: Specific, focused questions guide the direction and purpose of the study.
• $03$ Structured Research Instruments: Standardized tools (e.g., surveys with predetermined response options) ensure accuracy and comparability.
• $04$ Numerical Data: Information expressed in numbers allows for statistical analysis to identify trends and patterns.
• $05$ Large Sample Sizes: Including a substantial number of participants increases reliability and the ability to generalize findings.
• $06$ Replication: The study can be repeated by others using the same methods to produce similar results, increasing credibility.
• $07$ Future Outcomes: Uses data to forecast possible trends, behaviors, or events through statistical analysis.

Questions & Discussion

• Activity: Numbers or Experiences?:
  • Comparison of data sources for purchasing a phone:
  • Information A: $4.8 \text{ out of } 5$ stars (based on $12,000$ reviews).
  • Information B: Single anecdotal report of a phone exploding and poor customer service.
• 3-2-1 Summary Task:
  • $3$: Write three ($3$) core characteristics of quantitative research.
  • $2$: Identify two ($2$) essential elements that make a study quantitative.
  • $1$: Write one ($1$) sentence explaining why quantitative data is useful in research.