STAT 1350 |EXAM 1 |(CSCC)WITH
QUESTIONS AND ANSWERS RATED 100
% CORRECT 2025 UPDATE.
population – ANS all of the people of interest in a study
sample – ANS some of the individuals of interest
sample survey – ANS some of the individuals of interest are surveyed to get information about
all of the individuals, aka the population
census – ANS an attempt to survey all of the population
random sampling error – ANS the error that occurs when we estimate a population characteristic
by looking at only one portion of the population rather than the entire population
confidence interval quick method – ANS Adding and subtracting the margin of error to the
sample proportion
margin of error formula - ANS1/square root of n, n = whole of sample
statistic vs. parameter – ANS Statistic: the percentage of the sample
Parameter: percentage of the population
True or False: When we take a census we try to get information from every member of a simple
random sample. – ANS False - with a census we try to get information from every member of a
whole population.
True or false: Non-sampling errors could occur, even if we take a census. – ANS True – non-
sampling errors have to do with study methods and bias, which can occur regardless of the
sample.
True or false? Margin of error only covers random sampling error. – ANS True - margin of error
does not account for non-sampling errors.
True or false? Margin of error covers the effects of bias in the sampling method. – ANS False -
margin of error only covers random sampling errors, not bias.
2 examples of sampling errors – ANS Random sampling error, under coverage
3 examples of non-sampling errors – ANS Nonresponse, response (wrong) error, question
wording, data entry error
QUESTIONS AND ANSWERS RATED 100
% CORRECT 2025 UPDATE.
population – ANS all of the people of interest in a study
sample – ANS some of the individuals of interest
sample survey – ANS some of the individuals of interest are surveyed to get information about
all of the individuals, aka the population
census – ANS an attempt to survey all of the population
random sampling error – ANS the error that occurs when we estimate a population characteristic
by looking at only one portion of the population rather than the entire population
confidence interval quick method – ANS Adding and subtracting the margin of error to the
sample proportion
margin of error formula - ANS1/square root of n, n = whole of sample
statistic vs. parameter – ANS Statistic: the percentage of the sample
Parameter: percentage of the population
True or False: When we take a census we try to get information from every member of a simple
random sample. – ANS False - with a census we try to get information from every member of a
whole population.
True or false: Non-sampling errors could occur, even if we take a census. – ANS True – non-
sampling errors have to do with study methods and bias, which can occur regardless of the
sample.
True or false? Margin of error only covers random sampling error. – ANS True - margin of error
does not account for non-sampling errors.
True or false? Margin of error covers the effects of bias in the sampling method. – ANS False -
margin of error only covers random sampling errors, not bias.
2 examples of sampling errors – ANS Random sampling error, under coverage
3 examples of non-sampling errors – ANS Nonresponse, response (wrong) error, question
wording, data entry error
