La investigación CUANTITATIVA: DEFINICIÓN y TIPOS de estudios | Lorena Ronda | Universidad de Deusto

Introduction to Quantitative Research Designs

Overview of Quantitative Research

• The video introduces the second type of research designs, focusing on quantitative methods, which involve numerical data collection and statistical analysis.

• Quantitative studies aim to describe reality accurately and concretely, seeking conclusive results that can be extrapolated to larger populations.

Objectives of Quantitative Studies

• The primary objective is to provide precise descriptions of behaviors and connections between variables, quantifying how many people engage in specific actions.

• Researchers can categorize individuals into groups based on behaviors and analyze correlations, such as income levels affecting purchasing habits.

Hypothesis Testing

• A key goal is to test hypotheses formed during qualitative research; for example, verifying if older adults purchase certain products more frequently using numerical evidence.

Sample Size and Structure in Quantitative Research

Importance of Sample Size

• The sample must be large enough to represent a broader consumer group effectively; this contrasts with qualitative studies that focus on individual insights.

Structured Data Collection

• Unlike qualitative methods, quantitative research requires structured questionnaires where all participants answer the same questions uniformly for valid analysis.

Interpretation and Objectivity in Data Analysis

Objective Interpretation

• In quantitative studies, interpretations are based strictly on data collected without subjective influence from researchers regarding participant responses.

Methodologies in Quantitative Research

Data Sources and Methods

• Researchers may utilize existing databases or create new ones through surveys conducted online or offline.

• Panels are used for longitudinal studies to track changes over time among the same group of respondents.

Experimental Design

• Experiments isolate variables to observe effects under controlled conditions; examples include testing vaccine efficacy or marketing strategies' impact on sales.

Descriptive Studies in Media Reporting

Application of Findings

• Descriptive quantitative studies often inform news articles about consumer behavior trends, providing a basis for claims made by media outlets.

Summary of Key Concepts in Quantitative Research

Recap of Key Points

• Key aspects include objectives like describing reality numerically, ensuring representative samples, structured questioning formats, objective interpretation of data, and various methodologies like surveys and experiments.