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| Frage | Antworten |
| Standard Deviation | Scores around the mean of a distribution. It measures how much a set of scores is dispersed around an average measure of variability |
| Normal Distrubution | Describes how traits are distributed through a population. |
| Mode | The mode is the most frequently occurring score in a distribution. |
| Median | The median is the score located at the center of a distribution. |
| Mean | In statistics, the mean is the mathematical average of a set of numbers. |
| Operational Definitions | A statement of the procedures or ways in which a researcher is going to measure behaviors or qualities. |
| Random Assignment | Assigning participants to experiment or control group by chance. |
| Cross sectional study | Looking at people who differ on one key characteristic (such as age) at one specific point in time. |
| Longitudinal Study | An observational research method in which data is gathered for the same subjects repeatedly over a period of time. |
| Zero corellation | Indicates that there is NO relationship between two variables. |
| Correlation Studies | Study determines whether or not two variables are correlated |
| Participant Bias | Tendancy for researchparticipants to respond in a certain way because rthey know they are being observed. |
| Researcher bias | Tendancy for researchers to look for evidence that supports their hypothesis. |
| Surveys | Descriptive method; users questionaires or interviews |
| Skewed Distribution | A distribution is positively skewed if the scores fall toward the lower side of the scale and there are very few higher scores. Positively skewed data is also referred to as skewed to the right because that is the direction of the 'long tail end' of the chart. |
| Reliability | The consistency of a research study or measuring test. |
| Random Selection | How sample members (study participants) are selected from the population for inclusion in the study |
| Random Assignment | Psychologists rely on random assignment to assign subjects to different groups in an experiment. |
| Quasi Experiment | Research shares similarities with the traditional experimental design or randomized controlled trial, but they specifically lack the element of random assignment to treatment or control. |
| Quantitative Data | Quantitative research gathers data in numerical form which can be put into categories, or in rank order, or measured in units of measurement |
| Population | All of the people in the group to which the study applies. |
| Placebo | Any substance that is not known to have any pharmacological effects (produces no meaningful changes in an oranism, either chemical, biological, etc.) that is made to look like an active ("real") drug. |
| Normal Distribution | A statistical term frequently used in psychology and other social sciences to describe how traits are distributed through a population. |
| Hypothesis | A supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation. |
| Experimental Group | Group being experimented on. |
| Experiment | The prime method of inquiry in science. |
| Confounding Variables | Variables that the researcher failed to control, or eliminate, damaging the internal validity of an experiment. |
| Central Tendency | A measure of central tendency is a single value that describes the way in which a group of data cluster around a central value. |
| Case Studies | In-depth investigations of a single person, group, event or community |
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