MATH 110 STATISTICS FINAL EXAM
COMPREHENSIVE TEST 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◉ response. Answer: variable that measures an outcome
◉ observational study. Answer: "look dont touch"
◉ sample survey. Answer: observational studies that survey some
group of individuals by studying only some of its members because
they represent the larger group
◉ population. Answer: a group of ALL individuals about which we
want the information in a statistical study
◉ sample. Answer: SOME of the population from which you collect
the information and is used as conclusions about the whole
◉ experiment. Answer: deliberately imposes some treatment on
individuals in order to observe their responses
-to see if a treatment causes change in the response
,◉ biased. Answer: statistical study that systematically favors certain
outcomes
◉ convenience sampling. Answer: selection of whichever individuals
are easiest to reach
-biased
◉ voluntary response sample. Answer: chooses itself by responding
to a general appeal
-write in/call in
-biased
◉ simple random sample. Answer: all numbers are mixed up and
each has equal chance to be selected
◉ table of random digits. Answer: when numbers are 80% use 0-9
when numbers are 88% use 00-99
◉ parameter. Answer: number that describes the population
◉ statistic. Answer: number that describes the sample
◉ sample proportion formula. Answer: p-hat= x÷n
, ◉ bias. Answer: consistent, repeated deviation of the sample
statistic from the population parameter in the same direction when
we take many samples
◉ variablility. Answer: describes how spread out the values of the
sample statistic are when wer take many samples
◉ good sampling has.... Answer: Small bias and small variablility
◉ reduce bias. Answer: use random sampling to do what
◉ to reduce the variablility. Answer: use a larger sample
◉ MoE for 95% confidence≅ 1÷√ⁿ. Answer: margin of error is 1
divided by the total population
◉ 95% confidence means. Answer: used the sampling method that
gives a result this close to the truth 95% of the time
◉ two parts of a confidence statement. Answer: 1. margin of error-
how close to the population parameter
2. level of confidence -what percentage of all possible samples
satisfy the margin of error
COMPREHENSIVE TEST 2026 QUESTIONS
WITH SOLUTIONS GRADED A+
◉ response. Answer: variable that measures an outcome
◉ observational study. Answer: "look dont touch"
◉ sample survey. Answer: observational studies that survey some
group of individuals by studying only some of its members because
they represent the larger group
◉ population. Answer: a group of ALL individuals about which we
want the information in a statistical study
◉ sample. Answer: SOME of the population from which you collect
the information and is used as conclusions about the whole
◉ experiment. Answer: deliberately imposes some treatment on
individuals in order to observe their responses
-to see if a treatment causes change in the response
,◉ biased. Answer: statistical study that systematically favors certain
outcomes
◉ convenience sampling. Answer: selection of whichever individuals
are easiest to reach
-biased
◉ voluntary response sample. Answer: chooses itself by responding
to a general appeal
-write in/call in
-biased
◉ simple random sample. Answer: all numbers are mixed up and
each has equal chance to be selected
◉ table of random digits. Answer: when numbers are 80% use 0-9
when numbers are 88% use 00-99
◉ parameter. Answer: number that describes the population
◉ statistic. Answer: number that describes the sample
◉ sample proportion formula. Answer: p-hat= x÷n
, ◉ bias. Answer: consistent, repeated deviation of the sample
statistic from the population parameter in the same direction when
we take many samples
◉ variablility. Answer: describes how spread out the values of the
sample statistic are when wer take many samples
◉ good sampling has.... Answer: Small bias and small variablility
◉ reduce bias. Answer: use random sampling to do what
◉ to reduce the variablility. Answer: use a larger sample
◉ MoE for 95% confidence≅ 1÷√ⁿ. Answer: margin of error is 1
divided by the total population
◉ 95% confidence means. Answer: used the sampling method that
gives a result this close to the truth 95% of the time
◉ two parts of a confidence statement. Answer: 1. margin of error-
how close to the population parameter
2. level of confidence -what percentage of all possible samples
satisfy the margin of error
