COMM 291 final exam questions and terms Questions and Correct Answers/ Latest Update / Already Graded

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COMM 291 final exam questions and
terms Questions and Correct Answers/
Latest Update / Already Graded
Nominal Variable

Ans: Categorical or numerical values, used to identify. You
can't put them in order or do math with them.


Ordinal Variable

Ans: Categorical or numerical values, used to classify or
identify. You can rank them and put them in order but you can't
do math.


Identifier Variable

Ans: Unique string of numbers and or/letters representing that
name of the variable.


What is it called if a population parameter is unknown, and a sample
static to estimate it?

Ans: Confidence Interval




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What is it called if a claim is made about a population parameter, and
we use a sample static to test it?

Ans: Hypothesis Test


The larger a sample size is, the less ________________ it has and it is
described as?

Ans: Variability and standard error


How big does a sample size need to be?

Ans: >30 according to CTL


What is the 10% condition?

Ans: Means we do not have to sample over 10% of the
population.


What is a random sample?

Ans: A sample that is picked in a totally random way and is
totally unbiased.


What is a Voluntary response and is it random sample?



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