1:58KThe data in the accompanying table represent the ages of the presidents of a country on their first days in office.Complete parts (a) and (b).Click the icon to view the data table.(a) Construct a stem-and-leaf plot. Choose the correct answer below.President Ages4 6678994 145 00111122444445 555566677778President Ages4 144 6678995 00111122444446 01112446 5795 5555666777786 011124456 79Legend: 4 | 1represents 41 yearsLegend: 416Legend: 41represents 46 yearsrepresents 41 years(b) Describe the shape of the distribution. Choose the correct answer below.6 01112446 579Bell shapedSkewed leftUniformSkewed rightPresident Ages4148514449 5146 49 5146 5047 5052 54565455565455 5651 5455 57 60 645254555761 64|||President Ages4 144 667899=Print5 10011122444445 5555666777785761655761 6758 62 69DoneVol 4G. 20%LTE2ODXPresident Ages4 144 6678995 00111122444445 5555666777786 01112446 579Legend: 411represents 41 years

Answered: (a) Construct a stem-and-leaf plot.…

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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Use a stem-and-leaf plot to display the data, which represent the thickness (in centimeters) of ice measured at 20 different locations on a frozen lake. Describe any patterns. 5.8 6.3 6.9 7.2 5.1 4.9 4.6 5.8 7.0 6.8 8.2 7.5 7.2 5.8 7.2 8.0 7.4 6.9 5.9 4.9 Determine the leaves in the stem-and-leaf plot below. Key: 3|3 = 3.3 Ice Thickness 6| 8 What best describes the data? A. Most thicknesses are greater than 7 centimeters. B. Most thicknesses are 6 centimeters. C. Most thicknesses are between 5 and 8 centimeters. D. Most thicknesses are less than 5 centimeters.
Make a box-and-whisker plot
Create a stem plot for the following 26 numbers: 10, 10, 11, 13, 28, 31, 32, 32, 37, 37, 37, 38, 39, 50, 51, 53, 53, 55, 58, 62, 62, 63, 65, 65, 65, 66
How long does it take to finish the 1161-mile Iditarod Dog Sled Race from Anchorage to Nome, Alaska? Finish times (to the nearest hour) for 57 dogsled teams are shown below. 261 271 236 244 279 296 284 299 288 288 247 256 338 360 341 333 261 266 287 296 313 311 307 307 299 303 277 283 304 305 288 290 288 289 297 299 332 330 309 328 307 328 285 291 295 298 306 315 310 318 318 320 333 321 323 324 327 For this problem, use five classes. (a) Find the class width. (b) Make a frequency table showing class limits, class boundaries, midpoints, frequencies, relative frequencies, and cumulative frequencies. (Give relative frequencies to 2 decimal places.)
(b) Determine and interpret the interquartile range. The interquartile range is ______ crimes per 100,000 population.
K The data in the accompanying table represent the ages of the presidents of a country on their first days in office. Complete parts (a) and (b). Click the icon to view the data table. 74447 (a) Construct a stem-and-leaf plot. Choose the correct answer below. O B. President Ages 4 667899 O C. President Ages 4 24 4 24 4 667899 5 0011112244444 5 555566677779 6 0111244 6 589 Legend: 412 Legend: 4 | 6 Legend: 412 represents 42 years represents 46 years represents 42 years (b) Describe the shape of the distribution. Choose the correct answer below. O A. President Ages 4 24 4 667899 5 1001112244444 5 555566677779 6 0111244 6 589 President Ages 46 Bell shaped Skewed right Skewed left Uniform 42 48 49 49 46 50 50 51 52 51 54 51 51 52 54 54 54 5 0011112244444 5 555566677779 6 0111244 6 589 54 56 57 55 56 57 55 56 59 55 57 60 55 57 61 64 26399 65 68 69 U - X O D. President Ages 4 24 4 667899 5 0011112244444 5 555566677779 6 01112445 6 89 Legend: 412 represents 42 years
34. What should I buy? A study conducted by the Pew Research Center reported that 58% of cell phone owners used their phones inside a store for guidance on purchasing decisions. A sample of 15 cell phone owners is studied. b. What is the probability that fewer than 10 of them used their phones for guidance on purchasing decisions?
A geographer studying West Africa would like to know the size of stones in the delta region where the Niger River runs into the Gulf of Guinea. He collects 53 stones and measures the diameter of each, and so obtains the following measurements, in centimeters as seen below in the frequency table. Size (cm) Frequency [0, 2) [2, 4) 17 13 [4, 6) [6, 8) [8, 10) [10, 12) 10 7 4 a. Create a histogram for the measured stones. Include all labels. b. How many stones are larger than or equal to 6 cm?
Find the five-number summary of the scores in the Math 130 test pre-sented in Table 4.1, page 112. Draw the boxplot.
3. Which box plot has the largest interquartile range?
Calculate the probable population in the year 2010.2020,2025 and 2032. Population 7000 11000 13500 15500 22500 28500 30200 Year 1940 1950 1955 1960 1970 1985 1990 2000 34540
C. Identify the 5-number summary for a boxplot. All of the answers on this part are rounded off to 1 decimal place. The following are the foot lengths (cm) of 19 males. 25.1 25.4 25.7 25.9 26.4 26.7 26.7 26.7 26.8 27.5 27.8 27.9 27.9 28.1 28.6 28.7 28.8 29.2 29.2 6. What is the minimum value? 7. What is the value of Q1 (1st quartile)? 8. What is the value of Q2 (2nd quartile)? 9. What is the value of Q3 (3rd quartile)? 10. What is the maximum value?

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