relationship - bond or connection between two variables, random - by chance, basic - research that tests theories, control  - the group that does not get the treatment, validity  - accuracy, the extent to which a test or study measures what itis supposed to measure, variable - a quality of interest or concepts that can be manipulated, observed or studied, quantitative - uses data that has numerical representation or values, data - information; can be number or words, population - all of a group of interest, applied - research that is conducted to generate knowledge that improves practice, research - a systematic way to generate facts, experimental - the group that gets the treatment, extraneous - variables that may influence or contaminate the data, sample - a smaller group that represents population of interest, mean - the arithmetic average, questionnaire - Structured sets of questions on specified subjects that are used to gather information, inductive - a reasoning that is the basis for the qualitative research approach , concepts - the building blocks of theories, heterogeneous - very different or varied group, subject - the people who are being studied,

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