14. As part of a project in my statistics class last year, students recorded the waiting time (in minutes) for each of 32 patients visiting a dentist.
32 7 14 12 23 49 17 0 10 17 7
8 12 1 29 36 0 5 12 12 28 33
19 35 37 15 10 9 20 3 24 5
In the picture below I have begun to construct a stemplot for these data.
Complete the stemplot.
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0 |
0 | 7
1 |
1 |
2 |
2 |
3 | 2
3 |
4 |
4 |
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Please answer the following questions with complete sentences.
(b) What is the leaf unit in this case?
(c) What is the longest wait? Express the answer in hours as well as minutes.
(d) What is the range of waiting times? Your answer should be one number.
(e) How many patients waited at least half-an-hour?
(f) What proportion of patients waited at least 10 minutes?
(g) How would you describe the shape of the distribution of waiting times?
Homework Chapter 4A 14. As part of a project in my statistics class last year, students recorded the waiting time (in minutes) for each of 32 patients visiting a dentist. 32 7 14 12 23 49 17 0 10 177 8 12 1 29 36 0 5 12 12 28 33 19 35 37 15 10 9 20 3 24 5 In the picture below I have begun to construct a stemplot for these data. Complete the stemplot. 0 | 0 | 7 1 | 1 | 2 | 2 | 3 | 2 3 | 4 | 4 | Please answer the following questions with complete sentences. (b) What is the leaf unit in this case? (c) What is the longest wait? Express the answer in hours as well as minutes. (d) What is the range of waiting times? Your answer should be one number. (e) How many patients waited at least half-an-hour? (f) What proportion of patients waited at least 10 minutes? (g) How would you describe the shape of the distribution of waiting times? (h) What is the ‘individual’ in this example? 15. Based on the attached sheets answer the following: (a) What does the notice ‘Leaf Unit = 1.0’ tell you about the largest value for %Accept? (b) What is the range of values for %Accept? (c) Interpret the values 19 and (7) to the left of the stemplot for %Accept. 19. Here is the stemplot for the lengths (in centimeters) of 30 animals (same species). Stem-and-Leaf Display: length Stem-and-leaf of length N = 30 Leaf Unit = 1.0 1 4 9 1 5 3 6 28 7 7 0145 10 8 277 (7) 9 0244678 13 10 1478 9 11 2499 5 12 23 3 13 01 1 14 4 (c) Interpret the value 13 to the left of the stemplot.