STRAIGHTERLINE INTRODUCTION TO
STATISTICS FINAL EXAM 2026
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?
- answer-the mean is more affected by a small
number of extreme values
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? - answer-the
average student scored at the 40th percentile
,laura's quiz scores during the semester were
87, 82, 90, 92, and 84. what was her mean
score - answer-87
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? - answer-ordinal
which of the following is an example of a
nominal variable? - answer-gender
what sort of data are temperature
measurements? - answer-ratio
based on the graph, which statement best
describes the relationship between daily high
temperatures and the number of people going
to the beach? - answer-it is negative linear
relationship
, 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? - answer-$5.45
the outcomes observes in an experiment are: 2,
8, 3, 10, 4, and 9. what is the sample variance?
- answer-11.6
the table lists the populations and relative
frequencies of car ownership in 4 neighboring
cities. which city has the most cars? - answer-
westville
in the figure shown, sample a and sample b
have the same - answer-median
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? - answer-54
STATISTICS FINAL EXAM 2026
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?
- answer-the mean is more affected by a small
number of extreme values
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? - answer-the
average student scored at the 40th percentile
,laura's quiz scores during the semester were
87, 82, 90, 92, and 84. what was her mean
score - answer-87
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? - answer-ordinal
which of the following is an example of a
nominal variable? - answer-gender
what sort of data are temperature
measurements? - answer-ratio
based on the graph, which statement best
describes the relationship between daily high
temperatures and the number of people going
to the beach? - answer-it is negative linear
relationship
, 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? - answer-$5.45
the outcomes observes in an experiment are: 2,
8, 3, 10, 4, and 9. what is the sample variance?
- answer-11.6
the table lists the populations and relative
frequencies of car ownership in 4 neighboring
cities. which city has the most cars? - answer-
westville
in the figure shown, sample a and sample b
have the same - answer-median
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? - answer-54
