Intro to Statistics (Mid term exam)
Questions and Answers Graded A+
statistics - Correct answer-the science of collecting, describing, and analyzing data
cases or units - Correct answer-subjects or objects that we obtain information about
variable - Correct answer-any characteristic that is recorded for each case
dataset - Correct answer-a collection of variables
cases - Correct answer-stored in rows
variables - Correct answer-stored in columns
categorical variable - Correct answer-divides cases into groups with no logical
ordering
ordinal variable - Correct answer-divides cases into with a logical ordering
quantitative variable - Correct answer-measures or records a numerical quantity for
each case
population - Correct answer-includes all individuals or objects of interest
sample - Correct answer-a subset of the population
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, statistical interference - Correct answer-the process of using data from a sample to
gain information about the population
sampling bias - Correct answer-occurs when the method of selecting a sample
causes the sample to differ from the population in some relevant way
simple random sample - Correct answer-each unit of the population ha an equal
chance of being selected regardless of the other units chosen for the sample
bias - Correct answer-exists when the method of collecting data causes the sample
data to inaccurately reflect the population
types of bias - Correct answer-1. response
2. wording
3. selection
association - Correct answer-one variable tend to be related to the values of the
other variable
causation - Correct answer-changing the value of one variable influences the value
of the other variable
explanatory variable - Correct answer-causes response variable to change
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Questions and Answers Graded A+
statistics - Correct answer-the science of collecting, describing, and analyzing data
cases or units - Correct answer-subjects or objects that we obtain information about
variable - Correct answer-any characteristic that is recorded for each case
dataset - Correct answer-a collection of variables
cases - Correct answer-stored in rows
variables - Correct answer-stored in columns
categorical variable - Correct answer-divides cases into groups with no logical
ordering
ordinal variable - Correct answer-divides cases into with a logical ordering
quantitative variable - Correct answer-measures or records a numerical quantity for
each case
population - Correct answer-includes all individuals or objects of interest
sample - Correct answer-a subset of the population
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, statistical interference - Correct answer-the process of using data from a sample to
gain information about the population
sampling bias - Correct answer-occurs when the method of selecting a sample
causes the sample to differ from the population in some relevant way
simple random sample - Correct answer-each unit of the population ha an equal
chance of being selected regardless of the other units chosen for the sample
bias - Correct answer-exists when the method of collecting data causes the sample
data to inaccurately reflect the population
types of bias - Correct answer-1. response
2. wording
3. selection
association - Correct answer-one variable tend to be related to the values of the
other variable
causation - Correct answer-changing the value of one variable influences the value
of the other variable
explanatory variable - Correct answer-causes response variable to change
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
