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MATH 120: Introduction to StatisticsLime Spring Week 6 Quiz 2023 Scored A +

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MATH 120: Introduction to StatisticsLime Spring Week 6 Quiz 2023 Scored A + 1. Based on the linear regression, how much would you expect a 0.55 carat diamond to cost? A: $2,500 2. Based on the linear regression, how much would you expect a diamond that costs $5,500 to weigh? A: 0.90 carats 3. You're surprised to learn that instead of ~$100, a 0.30 carat costs ~$800 carats. Which explanation would make sense? A: All of the above. 4. If a residual is negative, what does it mean about the observed value? A: The predicted value is greater than the observed value. 5. If the expected value of a diamond is $3,500, but the observed value is $3,800, what is the residual? A; $300.

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MATH 120: Introduction to
Statistics Lime Spring
Week 6 Quiz 2023
Scored A +


1. Based on the linear regression, how much would you expect a 0.55 carat diamond to cost?




A: $2,500

2. Based on the linear regression, how much would you expect a diamond that costs \$5,500
to weigh?




A: 0.90 carats

3. You're surprised to learn that instead of ~\$100, a 0.30 carat costs ~\$800 carats. Which
explanation would make sense?
A: All of the above.

4. If a residual is negative, what does it mean about the observed value?
A: The predicted value is greater than the observed value.

5. If the expected value of a diamond is \$3,500, but the observed value is \$3,800, what is
the residual?
A; $300.

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