Module 3 & 4 Flashcards
research with the specific purpose of answering research questions that lend themselves to study through the collection of numerical data
purpose
research’s inherent understanding of reality and truth as perceived by the researchers themselves
ontology
the overall understanding of how knowledge is created or shared
epistemology
each individual in the population has an equal chance of being included in the sample
random sample
the population that is came from on all characteristics except total size
*like the population except smaller in size
representative sample
nonrandom samples are said to be biased samples because they are almost always systematically different rom the population on certain characteristics
biased
manipulating variables in a controlled environment to isolate the causal effects of a particular variable or set of variables
experimental
experiment without randomization
quasi-experimental
studies that look at relationships between variables
correlation
a numerical index that provides information about the strength and direction of the relationship between two variables
*is a number that can range from -1 to 1 with zero standing for no correlation at all
correlation coefficient
present when scores on two variables tend to move in the same direction
positive correlation
present when the scores on two variables tend to move in opposite directions
negative correlation
studies that examine prediction of future levels of a variable
predicative
studies that examine how different pre-existing groups vary on a variable or variables
casual comparative
a condition or characteristic that can take on different values or categories such as age, grade point average, test scores, and gender
variables
something that does not change, but takes on a single value
constant