1, indicating the strength and direction of the relation between two variables: inferential statistics a set of procedures used to make judgments about whether differences actually exist between sets of numbers. www. notesolution. com. What is scienti c inquiry: scienti c questions can be objectively answered: scienti c inquiry relies on objective methods and empirical evidence to answer testable question, the empirical process depends on theories, hypotheses, and research: Interconnected ideas or models of behaviour (theories) yield testable predictions (hypotheses), which are tested in a systematic way (research) by collecting and evaluating evidence (data). What are the data-collection methods of psychological science: observing is an unobtrusive strategy: data collected by observation must be clearly de ned and systematically collected. These self-report data may be biased by the respondents needs to present themselves in a particular way: case studies examine individual lives: an intensive examination of an individual is useful for examining unusual participants and research questions.