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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
All rights reserved © 2025/ 2026 |
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
All rights reserved © 2025/ 2026 |
, Page |2
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
All rights reserved © 2025/ 2026 |
