Survey research is a quantitative method that uses structured questionnaires or standardized interviews to collect numerical data from a large sample. This allows for statistical analysis and generalization to broader populations, distinguishing it from qualitative methods like ethnography or focus groups which prioritize depth over breadth.

Operationalization requires converting abstract concepts into measurable variables. For social class, researchers may use income, occupation, or education. Because these indicators are interpreted differently across studies, it creates significant challenges for ensuring validity and consistency in comparative sociological research.

Biological positivism seeks to identify the physical or genetic causes of criminal behavior. Historically, researchers in this tradition have focused heavily on violent crimes, attempting to correlate physical characteristics, brain anomalies, or genetic markers with aggressive and antisocial behavior, often ignoring the social and environmental contexts of crime.

Defining the research problem is the critical first step in the scientific method. It involves narrowing down a broad topic into a specific, manageable research question. Without a clearly defined problem, the researcher cannot effectively conduct a literature review or develop a testable hypothesis.

Sociology is a diverse discipline that employs a wide range of research methodologies. Researchers frequently utilize both quantitative methods, such as statistical analysis and surveys, and qualitative methods, such as interviews and ethnography, to gain a comprehensive understanding of complex social phenomena. The choice of method is typically dictated by the specific research question being addressed.

Interpreting statistical tables is a vital research skill. 'Eyeballing' refers to a preliminary analytical stage where a researcher scans a table to identify main features. This process involves reviewing the title and source notes, examining column and row headings to understand variables, and then visually scanning the data to detect general trends, outliers, or significant numerical patterns before conducting a more rigorous statistical analysis.

In scientific research, a dependent variable represents the outcome or the effect that is being measured. It is the variable that changes in response to manipulations of the independent variable. Therefore, it is the effect observed in an experiment.

Coding is the systematic process of assigning numerical values or categories to raw data, such as survey responses or interview transcripts. This transformation is essential for quantitative analysis, as it allows researchers to input data into statistical software to perform calculations, identify trends, and test hypotheses. Without coding, qualitative information remains difficult to aggregate or compare across large datasets, making it a fundamental step in the research process.

Secondary data analysis involves the use of existing datasets, such as census records, government reports, or previous academic studies. Sociologists use this method to analyze trends or test new hypotheses without the time and expense of conducting original fieldwork. It is a fundamental research technique that allows for longitudinal studies and cross-cultural comparisons by leveraging information already available in the public or academic domain.

Eyeballing is a preliminary analytical technique used by researchers to inspect raw data or tables visually. By scanning the data without complex statistical software, the researcher can identify obvious trends, outliers, or significant figures that warrant further, more rigorous investigation. It serves as a quick initial assessment of the dataset's characteristics.