19. Determine whether the approximate shape of the distribution in thehistogram shown is symmetric, uniform, skewed left, skewed right, or noneof these. Justify your answer.Choose the correct answer below.24-128-4-0-15,000 35,000 55,000 75,000 95,000A. The shape of the distribution is uniform because the bars are approximately the same height.OB. The shape of the distribution is skewed left because the bars have a tail to the left.C. The shape of the distribution is symmetric, but not uniform, because a vertical line can bedrawn down the middle, creating two halves that look approximately the same.D. The shape of the distribution is skewed right because the bars have a tail to the right.E.The shape of the distribution is none of these because the bars do not show any of thesegeneral trends.

The frequency histogram of a data set is given.

Answered: 19. Determine whether the approximate…

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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The first picture is the question and the second is the ones that I need help with. Thanks
Construct a stem-and-leaf plot of the test scores 67, 72, 86, 75, 89, 89, 88, 90, 99, 100. How does the stem-and-leaf plot show the distribution of these data? Construct the stem-and-leaf plot. Choose the correct answer below. O A. В. C. D. Stem Leaves Stem Leaves Stem Leaves Stem Leaves 6 7 6. 6. 7 7 25 7 25 7 25 7 26 8. 6996 6899 8 6 99 8 6 69 8 9. 0 9 9. 0 9 9. 07 9. 0 9 10 10 10 10 How does the stem-and-leaf plot show the distribution of these data? A. The lengths of the rows are similar to the heights of bars in a histogram; longer rows of data correspond to smaller frequencies. B. The lengths of the rows are similar to the widths of bars in a histogram; longer rows of data correspond to smaller frequencies. C. The lengths of the rows are similar to the widths of bars in a histogram; longer rows of data correspond to higher frequencies. D. The lengths of the rows are similar to the heights of bars in a histogram; longer rows of data correspond to higher frequencies.
Determine whether the statement is true or false. If it is false, rewrite it as a true statement. The midpoint of a class is the sum of its lower and upper limits divided by two. Choose the correct answer below. OA. The statement is false. A true statement is "The midpoint of a class is the class frequency divided by the sample size." B. The statement is false. A true statement is "The midpoint of a class is the average of its lower and upper limits." OC. The statement is false. A true statement is "The midpoint of a class is the difference of its lower and upper limits divided by two." O D. The statement is true.
Jamie’s Intro to Biology professor tells the class that on the first exam, the mean score is a 70, but the median score is an 84. What does this tell you about the skewness of the distribution? What measures of center and spread would you use to describe this distribution? a. The distribution is skewed left, so we should use the mean and the median to describe the distribution. b. The distribution is skewed left, so we should use the median and the IQR to describe the distribution. c. The distribution is skewed right, so we should use the median and the IQR to describe the distribution. d. The distribution is symmetric, so we should use the standard deviation and the IQR to describe the distribution. e. The distribution is skewed right, so we should use the mean and the IQR to describe the distribution.
2. Using the frequency/percentage distribution table below to find the median, 12t percentile, 25th percentile (1" quartile), 75th percentile (3rd quartile) and inter-quartile range (1QR) for the variable "mumber of rooms in respondents' home or apartment." Write one sentence interpreting each statistics. Number of rooms Cumulative Frequency Percent Valid Percent Percent Valid 153 room 7 .8 .8 244 1.2 1.2 2.0 3 968 4.7 4.9 6.9 2507 12.1 12.8 19.7 3758 18.1 19.1 38.8 3972 19.1 20.2 59.1 2965 14.3 15.1 74.2 2186 10.5 11.1 85.3 1146 5.5 5.8 91.1 10 868 4.2 4.4 95.5 11 373 1.8 1.9 97.4 12 217 1.0 1.1 98.5 13 77 4 4 98.9 14 35 2 99.1 15 22 .1 .1 99.2 16 15 .1 .1 99.3 17 47 2 99.5 18 40 2 99.8 19 30 .1 99.9 20 9 .0 .0 99.9 21 5 100.0 22 .0 100.0 Total 19642 94.4 100.0 Missing N/A 1160 5.6 Total 20802 100.0
The IQR represents the spread of the middle 50% of the data. Do you think the IQR in this problem is large or small? Here is the data. 0, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 6, 7, 13, 14 Median is 3. Min # is 0 Max # is 14 Q1 is 2 Q2 is 3 Q3 is 4 IQR=Q3 (4)-Q1(2) IQR=2
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Approximate the mean of the grouped data. Round to the nearest whole number. Phone calls (per day) Frequency 8-11 26 12-15 25 16-19 44 20-23 13 24-27 38 ... Question content area right Part 1 A.16 16 B.29 29 C.18 18 D.17 17 E.19
Show your solution clearly.
8. What Is the center of {0.1, 0.3, 0.02, 0.09, 0.4, 0.05, 0.26}? Is it the mean or the median? Which is more appropriate to use? O 0.4 0.2 0.1 0.3 New version available! (3.0.227) esc 24 4. tab b. W
Please help. Part A.

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