cases/units - correct answer ✔subjects or objects we obtain information about
| | | | | | | | | |
variable - correct answer ✔any characteristic recorded for each case
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categorical variable - correct answer ✔divides cases into groups
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quantitative variable - correct answer ✔measures or records a numerical
| | | | | | | | |
quantity for each case
| | | |
explanatory variable - correct answer ✔helps explain the response variable
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response variable - correct answer ✔responds to the explanatory variable
| | | | | | | | |
population - correct answer ✔all individuals or objects of interest
| | | | | | | | |
sample - correct answer ✔subset of the population
| | | | | | |
sampling bias - correct answer ✔method of selecting causes the sample to
| | | | | | | | | | |
differ from the population in some relevant way; cannot trust generalizations
| | | | | | | | | | |
because of this
| | |
, statistical inference - correct answer ✔how to use the information in a sample
| | | | | | | | | | | |
to make reliable statements/gain information about the population
| | | | | | | |
representative sample - correct answer ✔resembles the population, only in | | | | | | | | |
smaller numbers
| |
simple random sample - correct answer ✔all groups have the same chance of
| | | | | | | | | | | |
becoming the sample; each unit of the population has an equal chance of being
| | | | | | | | | | | | | |
selected, regardless of the other units chosen for the sample -- avoids bias
| | | | | | | | | | | | |
how to select a random sample - correct answer ✔not haphazardly (picking on
| | | | | | | | | | | |
our own) - use a formal method
| | | | | | |
bias - correct answer ✔exists when the method of collecting data causes the
| | | | | | | | | | | |
sample data to inaccurately reflect the population
| | | | | | |
how bias can happen - correct answer ✔1. wording of questions
| | | | | | | | | |
2. when we select who to be in sample
| | | | | | | |
use common sense to identify bias
| | | | |
association - correct answer ✔values of one variable tend to be related to the
| | | | | | | | | | | | |
values of the other variable
| | | | |
| | | | | | | | | |
variable - correct answer ✔any characteristic recorded for each case
| | | | | | | | |
categorical variable - correct answer ✔divides cases into groups
| | | | | | | |
quantitative variable - correct answer ✔measures or records a numerical
| | | | | | | | |
quantity for each case
| | | |
explanatory variable - correct answer ✔helps explain the response variable
| | | | | | | | |
response variable - correct answer ✔responds to the explanatory variable
| | | | | | | | |
population - correct answer ✔all individuals or objects of interest
| | | | | | | | |
sample - correct answer ✔subset of the population
| | | | | | |
sampling bias - correct answer ✔method of selecting causes the sample to
| | | | | | | | | | |
differ from the population in some relevant way; cannot trust generalizations
| | | | | | | | | | |
because of this
| | |
, statistical inference - correct answer ✔how to use the information in a sample
| | | | | | | | | | | |
to make reliable statements/gain information about the population
| | | | | | | |
representative sample - correct answer ✔resembles the population, only in | | | | | | | | |
smaller numbers
| |
simple random sample - correct answer ✔all groups have the same chance of
| | | | | | | | | | | |
becoming the sample; each unit of the population has an equal chance of being
| | | | | | | | | | | | | |
selected, regardless of the other units chosen for the sample -- avoids bias
| | | | | | | | | | | | |
how to select a random sample - correct answer ✔not haphazardly (picking on
| | | | | | | | | | | |
our own) - use a formal method
| | | | | | |
bias - correct answer ✔exists when the method of collecting data causes the
| | | | | | | | | | | |
sample data to inaccurately reflect the population
| | | | | | |
how bias can happen - correct answer ✔1. wording of questions
| | | | | | | | | |
2. when we select who to be in sample
| | | | | | | |
use common sense to identify bias
| | | | |
association - correct answer ✔values of one variable tend to be related to the
| | | | | | | | | | | | |
values of the other variable
| | | | |
