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Data Analysis and Correlation Study | Helpful review questions answered

Explore data interpretation, correlation analysis, probabilities, and best fit lines with detailed solutions. Improve your data handling skills effectively.

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Data Analysis and Correlation Study | Helpful review questions answered

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  1. Unit 4 Review

  2. Describing Data Q1 of 20 Describe the correlation: a) Strong positive b) Strong negative c) Weak positive d) Weak negative

  3. Describing Data Q2 of 20 Which of the following would be a positive correlation? The temperature and the amount of hot chocolate you drink A person’s height and their weight The amount of safety training given and accidents reported Your height and your favorite singer’s album sales.

  4. Describing Data Q3 of 20 2, 7, 10, 14, 22, 27, 34, 37, 37, 40 What is the mean of the data set?

  5. Describing Data Q4 of 20 2, 7, 10, 14, 22, 27, 34, 37, 37, 40 What is the MAD of the data set?

  6. Describing Data Q5 of 20 You need to display sales data for a national chain of stores. You are chiefly concerned with range and IQR. What would be the best display for the data?

  7. Describing Data Q6 of 20 For the given data, what is the probability that a randomly chosen person likes golf?

  8. Describing Data Q7 of 20 What is the probability that a person likes golf given they are 26-35 year old?

  9. Describing Data Q8 of 20 What is the marginal probability for a surfer?

  10. Describing Data Q9 of 20 You are given a data set for which you calculate a line of best fit of y = 1.49x+3. If you are given a data point of (8, 15.5), what is the residual for the point?

  11. Describing Data Q10 of 20 70, 85, 78, 90, 84, 82, 83 Calculate the IQR

  12. Describing Data Q11 of 20 70, 85, 78, 90, 84, 82, 83 Are there any outliers?

  13. Describing Data Q12 of 20 You need to display students’ scores. You are particularly concerned about frequency. You need to know about individual scores as well. What would be the best way to display the data?

  14. Describing Data Q13 of 20 Which is the best fitting exponential line for the given exponential data? a) b) c) d)

  15. Describing Data Q14 of 20 Given the scatter plot, what is the BEST type of function to represent the data? Linear Quadratic Exponential No Correlation

  16. Describing Data Q15 of 20 Describe the shape of the following data:

  17. Describing Data Q16 of 20 48, 23, 97, 36, 27, 72, 48, 41, 58 Find the range of the data.

  18. Describing Data Q17 of 20 23, 6, 8, 14, 28, 8, 13, 28 Find the upper quartile of the data.

  19. Describing Data Q18 of 20 Find the line of best fit for the data:

  20. Describing Data Q19 of 20 Find the line of best fit for the data:

  21. Describing Data Q20 of 20 Find the line of best fit. Let the year 2000 be x = 0.

  22. Homework Review Worksheet

  23. MATHO Answers C 2. B 23 4. 12 Box-and-whisker 6. 0.36 0.41 8. 0.43 0.58 10. 7 No 12. Dot Plot D 14. A Skew right 16. 74 25.5 18. y = 0.39x + 0.99 y = -4.94x + 39.86 20. y = 0.67x + 1.83 Extra Answers: Yes, 0.27, Bimodal, Histogram, y = 1.4x – 1.61

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