# Unit 4 Review Describing Data 20 Describe the

- Slides: 23

Unit 4 Review

Describing Data 20 Describe the correlation: a) Strong positive b) Strong negative c) Weak positive d) Weak negative Q 1 of

Describing Data 20 Q 2 of Which of the following would be a positive correlation? a) The temperature and the amount of hot chocolate you drink b) A person’s height and their weight c) The amount of safety training given and accidents reported d) Your height and your favorite singer’s album sales.

Describing Data 20 Q 3 of 2, 7, 10, 14, 22, 27, 34, 37, 40 What is the mean of the data set?

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

Describing Data 20 Q 5 of 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?

Describing Data 20 Q 6 of Surfing Golf Napping 16 -25 years old 24 10 14 26 -35 13 12 4 36 -45 6 14 3 Total For the given data, what is the probability that a randomly chosen person likes golf?

Describing Data 20 Q 7 of Surfing Golf Napping 16 -25 years old 24 10 14 26 -35 13 12 4 36 -45 6 14 3 Total What is the probability that a person likes golf given they are 26 -35 year old?

Describing Data 20 Q 8 of Surfing Golf Napping 16 -25 years old 24 10 14 26 -35 13 12 4 36 -45 6 14 3 Total What is the marginal probability for a surfer?

Describing Data 20 Q 9 of You are given a data set for which you calculate a line of best fit of y = 1. 49 x+3. If you are given a data point of (8, 15. 5), what is the residual for the point?

Describing Data of 20 70, 85, 78, 90, 84, 82, 83 Calculate the IQR Q 10

Describing Data of 20 Q 11 70, 85, 78, 90, 84, 82, 83 Are there any outliers?

Describing Data of 20 Q 12 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?

Describing Data of 20 Q 13 Which is the best fitting exponential line for the given exponential data? X Y a) b) c) d) 1 3 2 7 3 14 4 26 5 50

Describing Data of 20 Q 14 Given the scatter plot, what is the BEST type of function to represent the data? a) Linear b) Quadratic c) Exponential d) No Correlation

Describing Data of 20 Q 15 Describe the shape of the following data:

Describing Data of 20 Q 16 48, 23, 97, 36, 27, 72, 48, 41, 58 Find the range of the data.

Describing Data of 20 Q 17 23, 6, 8, 14, 28, 8, 13, 28 Find the upper quartile of the data.

Describing Data of 20 Q 18 Find the line of best fit for the data: X 18 15 19 8 10 13 9 14 Y 8 6 10 6 3 7 5 4

Describing Data of 20 Q 19 Find the line of best fit for the data: X 1 2 3 4 5 6 7 8 Y 35 29 26 20 16 9 6 0

Describing Data of 20 Q 20 Find the line of best fit. Let the year 2000 be x = 0. X 2000 2001 2002 2003 2004 2005 2006 2007 Y 2. 3 2. 6 3. 1 3. 3 4. 0 5. 2 5. 9 7. 0

Homework Review Worksheet

MATHO Answers 1. C 3. 23 5. Box-and-whisker 7. 0. 41 9. 0. 58 11. No 13. D 15. Skew right 17. 25. 5 19. y = -4. 94 x + 39. 86 2. B 4. 12 6. 0. 36 8. 0. 43 10. 7 12. Dot Plot 14. A 16. 74 18. y = 0. 39 x + 0. 99 20. y = 0. 67 x + 1. 83 Extra Answers: Yes, 0. 27, Bimodal, Histogram, y = 1. 4 x – 1. 61