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Straighterline Statistics Final Exam Questions
and Answers (Expert Solutions)
Q: 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
Q:
which of the following is an example of a nominal variable?
ANS 🗹🗹: gender
Q:
what sort of data are temperature measurements?
ANS 🗹🗹: ratio
Q:
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
Q:
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
Q:
the outcomes observes in an experiment are: 2, 8, 3, 10, 4, and 9. what is the sample
variance?
ANS 🗹🗹: 11.6
Q:
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
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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
Q:
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
Q:
laura's quiz scores during the semester were 87, 82, 90, 92, and 84. what was her mean
score
ANS 🗹🗹: 87
Q:
the table lists the populations and relative frequencies of car ownership in 4 neighboring
cities. which city has the most cars?
ANS 🗹🗹: westville
Q:
in the figure shown, sample a and sample b have the same
ANS 🗹🗹: median
Q:
the contingency table describes the living arrangements of students at a small college.
what percentage of the students are women who live in off-campus housing?
ANS 🗹🗹: 54
Q:
which of these correlation coefficients shows the strongest linear relationship between 2
variables
ANS 🗹🗹: -0.31
Q:
Straighterline Statistics Final Exam Questions
and Answers (Expert Solutions)
Q: 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
Q:
which of the following is an example of a nominal variable?
ANS 🗹🗹: gender
Q:
what sort of data are temperature measurements?
ANS 🗹🗹: ratio
Q:
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
Q:
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
Q:
the outcomes observes in an experiment are: 2, 8, 3, 10, 4, and 9. what is the sample
variance?
ANS 🗹🗹: 11.6
Q:
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
, Page | 2
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
Q:
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
Q:
laura's quiz scores during the semester were 87, 82, 90, 92, and 84. what was her mean
score
ANS 🗹🗹: 87
Q:
the table lists the populations and relative frequencies of car ownership in 4 neighboring
cities. which city has the most cars?
ANS 🗹🗹: westville
Q:
in the figure shown, sample a and sample b have the same
ANS 🗹🗹: median
Q:
the contingency table describes the living arrangements of students at a small college.
what percentage of the students are women who live in off-campus housing?
ANS 🗹🗹: 54
Q:
which of these correlation coefficients shows the strongest linear relationship between 2
variables
ANS 🗹🗹: -0.31
Q:
