STRAIGHTERLINE INTRODUCTION TO
STATISTICS FINAL STUDY GUIDE 2026
SOLVED QUESTIONS FULLY CORRECT
⫸ 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
⫸ 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
⫸ 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
⫸ which of these correlation coefficients shows the strongest linear
relationship between 2 variables Answer: -0.31
STATISTICS FINAL STUDY GUIDE 2026
SOLVED QUESTIONS FULLY CORRECT
⫸ 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
⫸ 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
⫸ 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
⫸ which of these correlation coefficients shows the strongest linear
relationship between 2 variables Answer: -0.31
