Applied Algebra C957 Questions with Verified Answers (Correct Update)

Applied Algebra C957 Questions with Verified Answers (Correct
Update)

Question 1: Weak correlation (r^2)

Answer: Ans-> 0.3
- Can't extend data range.

Question 2: Moderate correlation (r^2)

Answer: Ans-> 0.3 but < 0.7
- Can extend data range by 25%.

Question 3: Strong correlation (r^2)

Answer: Ans-> 0.7
- Can extend data range by 50%.
Take the difference of the X-values and divide by 50%. Can extend X values up to that value.

Question 4: Extrapolation

Answer: Ans-A prediction that's outside of the range of data.

Question 5: SOMEV

Answer: Ans-Sample Size (10+)
Outliers
Model choice and strength
Extrapolation
Validity

Question 6: Linear function

Answer: Ans-- Good for modeling data that lies in a straight line
- Or data that steadily increases or decreases by a set amount.

Question 7: Polynomial function

Answer: Ans-- Good for modeling data with turns.
- Good for modeling many distance, velocity, and acceleration problems.




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