^dependent variable. Activity/characteristic believed to make a difference with respect to
^ome behavior/ the cause and treatment
ximitations. Aspect of study that the researcher knows may negatively affect the
. jsuh/generalizability of the results but over which he/she as no control.
prknary data. Information obtained from persons who witnessed an event. Testimony,
riginal document (written by someone who was at the scene), relic Random sampling. Process of selecting a sample in such a way that all individuals have a
air chance of being selected Research design. Selecting sample, measuring outcomes, analyzing data for purpose of
•nswering research question
Sample. Number of individuals selected from a population for a study survey. An attempt to I collect data from members of a population on order to determine the current status of the population with respect to a variable
/alidity. Degree to which a test measures what it is intended to measure Variable. The factor entity or group that a researcher wants information on, especially how
)ne set of variables interacts with other variables.