IDS 270 Midterm Vocabulary Questions and Correct Answers/ Latest Update / Already Graded

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IDS 270 Midterm Vocabulary Questions
and Correct Answers/ Latest Update /
Already Graded

observational study

Ans: observe the behavior or ask people questions as they are
going about their day to day life


experiment

Ans: impose some treatment on people and then obser ve their
behavior or ask questions


confounded variables

Ans: two variables where the effect of one on the dependent
variable cannot be separated from the effect of another


population

Ans: the set of everything


sample


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Ans: a small group pulled from the population


voluntary response sampling

Ans: People volunteer to give data for a study


convenience sampling

Ans: people are selected to be in a sample because of
convenience or low expense


bias

Ans: systematically favoring a certain outcome from research


simple random sampling

Ans: label all the people in the population with a number. have
a computer select a set of random numbers in that range.
People labeled with the number are selected for the sample.
Therefore, every person or sub-group of people has an equal
chance of being in the sample.


stratified sampling



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