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Straighterline Statistics Final Exam
Questions with Detailed Verified
Answers
Question: anais is organizing her rock collection and places each rock in one
of three categories: small, medium, or large. this illustrates what level of
measurement?
Ans: ordinal
Question: which of the following is an example of a nominal variable?
Ans: gender
Question: what sort of data are temperature measurements?
Ans: ratio
Question: based on the graph, which statement best describes the
relationship between daily high temperatures and the number of people going
to the beach?
Ans: it is negative linear relationship
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Question: the table shows the number of train tickets carl purchased to each
station over the last month and the fare to each station. what was the average
cost per ride?
Ans: $5.45
Question: the outcomes observes in an experiment are: 2, 8, 3, 10, 4, and 9.
what is the sample variance?
Ans: 11.6
Question: jason collects information about annual family income from each
student at his college. he computes both the mean and median family income
across all students and is surprised to find that the mean income is higher than
the median income. what is the most likely reason for the difference in the
mean and the median?
Ans: the mean is more affected by a small number of extreme values
Question: an instructor administers a test to a class of 30 students and
observes that the scores are close to normally distributed with a mean score of
40 and a standard deviation of 10. what can you conclude from these results?
Ans: the average student scored at the 40th percentile
Question: laura's quiz scores during the semester were 87, 82, 90, 92, and 84.
what was her mean score
Straighterline Statistics Final Exam
Questions with Detailed Verified
Answers
Question: anais is organizing her rock collection and places each rock in one
of three categories: small, medium, or large. this illustrates what level of
measurement?
Ans: ordinal
Question: which of the following is an example of a nominal variable?
Ans: gender
Question: what sort of data are temperature measurements?
Ans: ratio
Question: based on the graph, which statement best describes the
relationship between daily high temperatures and the number of people going
to the beach?
Ans: it is negative linear relationship
, Page | 2
Question: the table shows the number of train tickets carl purchased to each
station over the last month and the fare to each station. what was the average
cost per ride?
Ans: $5.45
Question: the outcomes observes in an experiment are: 2, 8, 3, 10, 4, and 9.
what is the sample variance?
Ans: 11.6
Question: jason collects information about annual family income from each
student at his college. he computes both the mean and median family income
across all students and is surprised to find that the mean income is higher than
the median income. what is the most likely reason for the difference in the
mean and the median?
Ans: the mean is more affected by a small number of extreme values
Question: an instructor administers a test to a class of 30 students and
observes that the scores are close to normally distributed with a mean score of
40 and a standard deviation of 10. what can you conclude from these results?
Ans: the average student scored at the 40th percentile
Question: laura's quiz scores during the semester were 87, 82, 90, 92, and 84.
what was her mean score
