IDS 270 Exam 1 Vocab Questions and Correct Answers/ Latest Update / Already Graded

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IDS 270 Exam 1 Vocab Questions and
Correct Answers/ Latest Update / Already
Graded
Observational study

Ans: observing the behavior or ask people questions as they
are going about their day to day lives.


Experiment

Ans: impose a treatment on people and then observe 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 the other.


Population

Ans: the set of everything


sample

Ans: a small group pulled from the population


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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.
Everyone has the same chance to get chosen.


stratified sampling

Ans: first breaking the population into natural segments
(strata) and then using random sampling within the strata



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