2. Here are the scores on the first exam in an introductory statisticscourse for 30 students in one statistics course:5759616568 70707373757575788080808282 83 85 8587 9090919292949498Use these data to make a stemplot. Use the stemplot to describe thedistribution of the first-exam scores for this course.

Answered: Image /qna-images/answer/c0fe313c-02d6-409f-8b74-5402f30fa3f8.jpg

Answered: 2. Here are the scores on the first…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Find the five-number summary for the following data set. 84 82 85 Min 89 86 90 82 81 82 82 83 80 Add Work Q1 > Next Question Median Q3 Max
The heights (to the nearest inch) of 30 males are shown below. Construct a frequency distribution and a frequency histogram of the data using 5 classes. Describe the shape of the histogram as symmetric, uniform, negatively skewed, positively skewed, or none of these. 67 76 70 68 72 68 65 63 76 69 66 72 66 66 69 73 62 62 71 73 70 72 71 65 68 66 74 72 68 69 ... Question content area right Part 1 Construct a frequency distribution of the data using 5 classes. Use the minimum data entry as the lower limit of the first class. Use the smallest whole number class width possible. Class Frequency Midpoint enter your response here –enter your response here enter your response here enter your response here enter your response here –enter your response here enter your response here enter your response here enter your…
Descriptive Statistics.For the given data:4 8 18 20 21 22 23 24 25 26 27 28 29 30 30 31 31 32 32 33 33 34 35 36 37 38 39 47 53 a. Make a Frequency Diagram with 7 classes.b. Draw the histogram.
Here is a set of sample data. 83 89 32 94 18 38 74 30 79 21 84 99 88 25 72 46 93 49 5 7 28 82 52 47 19 85 58 22 Base on the data above, identify the 5 number summary , , , ,
Consider the following ordered data. 6 9 9 10 11 11 12 13 14 Find the low, Q1, median, Q3, and high.
Males 74 75 69 72 75 73 88 76 71 64 67 71 72 82 71 83 82 78 80 81 75 Females 75 57 61 71 79 78 81 65 57 80 73 83 86 79 65 70 69 76 55 66 79 5. Construct stem-and-leaf plots for each data set using four stems. You should have two separate plots: one for men and one for women. 6. Why is it important to have the same stems for both plots, even though one plot has an empty stem? 7. Comment on the distributions. What type on conclusions can you make about the heart rates of males and females? Do they appear to be very different?
Consider the following ordered data. 4 7 7 8 9 9 10 11 12 (a) Find the low, Q1, median, Q3, and high.
Here is a set of sample data. 96 52 19 97 98 67 93 45 57 41 89 60 66 5 42 32 71 73 90 33 53 35 24 85 9 75 Base on the data above, identify the 5 number summary , , , ,
The data set shown below contains the number of hurricanes that occurred each year over a 14-year period. Some scientists claim that there has been an increase in the number of hurricanes as the years progressed. Complete parts (a) through (d). Year 10 11 12 13 140 # 3 4. 2 1 a) Create a histogram of these data. Choose the correct histogram below. OA. OB. Oc. OD. # of Hurricanes # of Hurricanes # of Hurricanes # of Hurricanes b) Describe the distribution. Is the distribution uniform, unimodal, or bimodal? O A. The distribution is uniform. O B. The distribution is bimodal. O C. The distribution is unimodal. Is the distribution symmetric or skewed?
The following data represent salaries, in thousands of dollars, for employees of a small company. Notice the data have been sorted in increasing order. 54 55 55 57 57 59 60 65 65 65 66 68 68 69 69 70 70 70 75 75 75 75 77 82 82 82 88 89 89 91 91 97 98 98 98 280 a. Make a histogram using the class boundaries 53.5, 99.5, 145.5, 191.5, 237.5, 283.5 b. Look at the last data value. Does it appear to be outlier? Could this be the owners salary? c. Eliminate the high salary of 280 thousand dollars. Make a new histogram using the class boundaries 53.5, 62.5, 71.5, 80.5, 89.5, 98.5. Does this histogram reflect the salary distribution of most of the employees better than the histogram in part a?
Full data set 3. The data to the right represent the number of chocolate chips per cookie in a random sample of a name brand and a store brand. Complete parts (a) to (c) below. Name Brand Store Brand 22 29 24 22 28 23 25 22 17 28 24 35 32 28 33 27 23 31 26 28 15 24 23 21 (a) Draw side-by-side boxplots for each brand of cookie. Label the boxplots "N" for the name brand and "S" for the store brand. Choose the correct answer below. O A. OB. OC. N- S- 30 40 40 (b) Does there appear to be a difference in the number of chips per cookie? O A. Yes. The store brand appears to have more chips per cookie. O B. Yes. The name brand appears to have more chips per cookie. O C. No. There appears to be no difference in the number of chips per cookie. O D. There is insufficient information to draw a conclusion. (c) Does one brand have a more consistent number of chips per cookie? O A. Yes. The store brand has a more consistent number of chips per cookie. B. No. Both brands have roughly the same number…

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