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Effect Size
Definition Effect size is a quantifiable measure of the strength of a relationship between two va...
P-Value
Definition The P-value is a probability. Specifically, it's the probability of observing results ...
Descriptive Statistics
Definition Descriptive statistics are methods used to summarize and describe the main features of...
Inferential Statistics
Definition Inferential statistics is a branch of statistics that uses data from a sample to make ...
Scales of Measurment
Definition Scales of measurement refer to the ways in which variables are defined and quantified ...
Validity
Definition The degree to which a test or study measures what it claims to measure. Example A qu...
Theory
Definition A theory in research is a systematically organized set of concepts, definitions, and p...
Survey
Definition A method of data collection using questionnaires or interviews to gather information f...
Social Desirability Bias
Definition When participants give answers they think are socially acceptable. Example In a study...
Sampling Bias
Definition When the sample is not representative of the population. Example A researcher wishes ...
Sample
Definition A subset of a population selected for study. Example A researcher is interested in vo...
Research Question
Defintion A question that guides the focus of a research study. Example A researcher has previou...
Research Problem
Definition The issue or topic that a researcher seeks to address. Example A researcher is review...
Replication
Definition Replication refers to the process of repeating an experiment or study under similar co...
Reliability
Definition The consistency of a measure or test over time or across different observers. Example...
Quasi-Experiment
Definition A quasi-experiment is a type of research study that looks like a true experiment, but ...
Quantitative Research
Definition Research involving numerical data and statistical analysis. Example A researcher want...
Qualitative Research
Definition Research involving non-numerical data, often used to understand concepts or experience...
Population
Definition The entire group of individuals relevant to a particular research question. Example A...
Operational Definition
Definition A precise explanation of how a concept will be measured in a study. Example A researc...