Straighterline Statistics Final Exam ( Questions with
correct answers ) 2025, Graded A+, Simplified and
summarized, guaranteed success!
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
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
what conclusion can be drawn from the graph of average daily temperature and hot beverage
sales - ANSWER there is a negative correlation between average daily temperature and hot
beverage sales
the coefficient of correlation r is a measurement of statistical relationships that are - ANSWER
linear
a bag contains marbles of different colors (red, yellow, and blue) and different sizes (small and
large). the probability of picking a blue marble out of the bag is 0.10 and the probability of
picking a large marble is 0.50. what is the probability of picking a large blue marble - ANSWER
0.05
correct answers ) 2025, Graded A+, Simplified and
summarized, guaranteed success!
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
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
what conclusion can be drawn from the graph of average daily temperature and hot beverage
sales - ANSWER there is a negative correlation between average daily temperature and hot
beverage sales
the coefficient of correlation r is a measurement of statistical relationships that are - ANSWER
linear
a bag contains marbles of different colors (red, yellow, and blue) and different sizes (small and
large). the probability of picking a blue marble out of the bag is 0.10 and the probability of
picking a large marble is 0.50. what is the probability of picking a large blue marble - ANSWER
0.05
