Final Exam: Straighterline Introduction to Statistics (Latest 2026/2027 Update) Questions with Verified Answers | Graded A| 100% Correct.

Final Exam: Straighterline Introduction
to Statistics (Latest 2026/2027 Update)
Questions with Verified Answers |
Graded A| 100% Correct.

Question:

Jason collects information about annual family income from each student
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at his college. He computes both the mean and median family income
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across all students and is surprised to find that the mean income is higher
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than the median income. What is the most likely reason for the difference
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in the mean and the median??
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Answer:
The mean is more affected by a small number of extreme values
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Question:
An instructor administers a test to a class of 30 students and observes
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that the scores are close to normally distributed with a mean score of 40
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and a standard deviation of 10. What can you conclude from these
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results??

Answer:
The average student scored at the 40th percentile
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,Question:

Laura's quiz scores during the semester were 87, 82, 90, 92, and 84. What
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was her mean score?
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Answer:

87




Question:

The table lists the populations and relative frequencies of car ownership in
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4 neighboring cities. Which city has the most cars??
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Answer:

Westville




Question:

In the figure shown, sample a and sample b have the same?
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Answer:

Median




Question:

, The contingency table describes the living arrangements of students at a
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small college. What percentage of the students are women who live in off-
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campus housing?? i,-




Answer:

54




Question:

Which of these correlation coefficients shows the strongest linear
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relationship between 2 variables? i,- i,- i,-




Answer:
-0.31




Question:
What conclusion can be drawn from the graph of average daily
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temperature and hot beverage sales? i,- i,- i,- i,-




Answer:

There is a negative correlation between average daily temperature and
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hot beverage sales
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Question:

The coefficient of correlation r is a measurement of statistical relationships
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that are?
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