2. Review Unit 4A What is the mean of the following numbers? {10, 15, 14, 8, 10, 11, 12, 13, 15, 10} Answer: Mean= 11.8 10+15+14+8+10+11+12+13+15+10= 118, 118/10=11.8

3. Review Unit 4A Find the median of the following numbers. {25,22, 24, 26, 24, 30, 31, 33, 40, 26} Answer: Median= 26 Numbers in order: 22, 24, 24, 25, 26, 26, 30, 31, 33, 40

4. Review Unit 4A Find the mode of the following set of numbers. {101, 105, 102, 102, 110, 110, 115, 102, 105, 100} Answer: Mode= 102 Numbers in order: 100, 101, 102, 102, 102, 105, 105, 110, 110, 115

5. Review Unit 4A Find the Mean Absolute Deviation(MAD) of the following numbers. {22, 20, 21, 22, 22, 20, 21, 25, 24, 23} Answer: MAD=1.2 Mean= 22+20+21+22+22+20+21+25+24+23=220, 220/10=22 22-22=0, 20-22=-2, 21-22=-1, 22-22=0, 22-22=0, 20-22=-2, 21-22=-1, 25-22=3, 24-22=2, 23-22=1 0+2+1+0+0+2+1+3+2+1=12, 12/10=1.2

6. Review Unit 4A Find Q1 and Q3 for the following numbers. {75, 76, 78, 80, 82, 74, 83, 74, 75, 72} Answer: Q1=74 Q3=80 Numbers in order: 72, 74, 74, 75, 75, 76, 78, 80, 82, 83

7. Review Unit 4A What is the min of the following set of numbers? {55, 56, 70, 58, 52, 53,59, 53, 54, 53} Answer: min =52 Numbers in order: 52, 53, 53, 53, 54, 55, 56, 58, 59, 70

8. Review Unit 4A What is the max of the following set of numbers? {76, 67, 64, 72, 79, 80, 63, 65, 70, 72} Answer: max=80 Numbers in order: 63, 64, 65, 67, 70, 72, 72, 76, 79, 80

9. Review Unit 4A What numbers are included in the Five Number Summary? Answer: min, Q1, median, Q3, max

10. Review Unit 4A What is the IQR for the following set of numbers? {117, 119, 125, 130, 111, 126, 122, 115, 120, 129} Answer: 9 Numbers in order: 111, 115, 117, 119, 120, 122, 125, 126, 129, 130 Q1= 117, Q3=126 IQR= Q3-Q1 IQR= 126-117= 9

11. Review Unit 4A What type of distribution is shown? Answer: Symmetric Distribution

12. Review Unit 4A What type of distribution is shown? Answer: Left-Skew Distribution

13. Review Unit 4A What type of distribution is shown? Answer: Right-Skew Distribution

14. Review Unit 4A What type of distribution is shown? Answer: Non-Symmetric Bimodal Distribution

15. Review Unit 4A Which graph has a higher measure of center? Answer: The bottom graph, median=68

16. Review Unit 4A Which graph has a higher measure of center? Graph A Graph B Answer: Graph A

17. Review Unit 4A What is the range of the following data? {105, 108, 100, 111, 99, 98, 104, 102, 100, 110} Answer: 13 Numbers in order: 98, 99, 100, 100, 102, 104, 105, 108, 110, 111 Range= max-min Range- 111-98= 13

18. Review Unit 4A Given the following grades on a Math test, complete the frequency chart below. {60, 60, 70, 73, 80, 85, 89, 90, 89, 91, 65, 68, 73, 85, 89, 90, 100, 96, 99, 98} IntervalFrequency 60-69 70-79 80-89 90-99 100 + Frequency 4 3 6 6 1

19. Review Unit 4A Draw the histogram based on the following data. Answer: IntervalFrequency 20-2910 30-3912 40-498 50-596 60-6914

20. Review Unit 4A Which of the following histogram has the largest spread? Graph A Graph B Answer: Graph A

21. Review Unit 4A Draw the dot plot for the following data. {22, 28, 22, 21, 26, 26, 21, 22, 23, 24, 28, 26, 28, 22, 22, 21, 26, 23, 24, 23, 28, 26, 21, 22, 22, 23, 23, 24, 26, 23} Answer:

22. Review Unit 4A Which dot plot has the least spread? Graph AAnswer: Graph A Graph B

23. Review Unit 4A Which box plot has the greater spread? Graph A Graph B Answer: Graph A

24. Review Unit 4A If the data has outliers, what is the best value to use for the measure of center? Answer: Median

25. Review Unit 4A Using the following dot plot, make a list of all of the sales. Answer: $10, $12, $12, $14, $14, $14, $16, $16, $16, $18, $18, $18, $18, $20, $22, $22, $22, $22

26. Review Unit 4A What values are used to measure the spread of data? Answer: Range & IQR

27. Review Unit 4A What values are used to measure the center of data? Answer: Mean & Median

28. Review Unit 4A Compare the following data sets using spread and measure of center. Data Set A: {20, 22, 24, 27, 28} Data Set B: {35, 40, 42, 34, 34} Answer: -Data Set B has a higher measure of center because its median is higher than data set A. Median of Data Set A= 24, Median of Data Set B= 35 -Data Set B has a greater spread because its IQR is 7 versus the IQR of data set A which is 6.5

29. Review Unit 4A Using the following frequency chart determine which interval the median would be located in. Answer: Between 21-30 IntervalFrequency 0-1012 11-2010 21-308 31-406 41-5014

30. Review Unit 4A Which of the following has the lowest mean absolute deviation (MAD)? A. 3, 4, 5, 6 B. 10, 12, 14, 16 C. 6, 7, 8, 9 D. 5, 5, 5, 5 Answer: D

31. Review Unit 4A According to the following chart, how many people participated in the survey? Answer: 78 people AgeFrequency 20-2915 30-3912 40-4925 50-5918 60-698

32. Review Unit 4A What label always goes on the y-axis when creating a histogram? Answer: Frequency

33. Review Unit 4A According to the following frequency chart, how many students scored between 70-79 on their test? Answer: 6 students ScoresFrequency 60-695 70-796 80-8910 90-9912 100 +2