Practice Correlation And Regression (3.8) - Statistics

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9 questions

Flashcard drill
4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does it mean when two variables are positively correlated?
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Think of study time and grades.
Question 2.
What type of correlation exists if more rain leads to less sunshine?
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Recall how one variable influences the other in opposite directions.
3Question 3.
What type of correlation exists when both variables increase together?
- A) Positive Correlation
- B) Negative Correlation
- C) No Correlation
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Remember the example of studying and grades.
4Question 4.
True or false: Regression can be used to predict one variable based on another.
- True
- False
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Think about how businesses forecast sales.
Question 5.
Imagine a company notices that increased social media advertising correlates with higher sales. How could they use regression to improve sales forecasts?
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Consider inputs and outputs for your prediction.
Question 6.
If two variables show a strong positive correlation, how could this mislead a researcher about causation?
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Reflex on other scenarios where third variables might play a role.

5 more questions in this section. Enroll free to practise them all.