(b) Calculate the value of the correlation coefficient. (Round your answer to four decimal places.)[Answer Box] An article provided data on median worker pay (in thousands of dollars) and the 1-year percent change in stock price for the 13 highest paying companies in the United States. Here is the detailed information:| Company | Median Worker Pay | Percent Change in Stock Price ||-----------|-------------------|-------------------------------|| Company 1 | 134.7 | 21.9 || Company 2 | 132.2 | 92.4 || Company 3 | 125.0 | 33.8 || Company 4 | 122.8 | 52.3 || Company 5 | 122.5 | 42.1 || Company 6 | 121.2 | 2.6 || Company 7 | 121.2 | 5.3 || Company 8 | 119.0 | 29.9 || Company 9 | 118.0 | 7.9 || Company 10| 118.0 | 37.2 || Company 11| 117.6 | 15.8 || Company 12| 117.4 | 21.9 || Company 13| 115.1 | -44.5 |In this data set, the median worker pay ranges from $115,100 to $134,700. The percent change in stock price over one year varies significantly, with the highest increase being 92.4% and the lowest change as a decrease of 44.5%. This dataset can be useful for analyzing the correlation between median worker pay and stock price changes in leading companies.

Answered: Image /qna-images/answer/a416485b-3dc9-43ac-9c7a-e5742f528682.jpg

Answered: n article gave the following data on…

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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5) Does the scatterplot below show evidence of a positive or negative linear relationship between the percentage of people age 25+ with a BA degree and income per capita? 60000.00- 50000.00- 40000.00- 30000.00- 20000.00- 10.00 20.00 30.00 40.00 50.00 percent of people age 25+ with BA degree 2005 8 o 0008 0రిం income per capita 2005
In addition to being asked about the quality of their sleep the night before the interview, survey respondents were asked if they felt ill with headaches, felt ill with allergies, or felt ill with a cold the day before the interview. Gallup provided the following graph based on the responses. Did you experience the following feelings during a lot of the day yesterday? Percent reporting "fair" or "poor" sleep night before ● Yes, experienced illness the day prior No, did not experience illness the day prior 46% I 29% Headaches 37% 32% Allergies This graph represents O The conditional distribution of illness experience, given sleep quality O The joint distribution of sleep quality and mental health state O The marginal distribution of illness experience O The conditional distribution of sleep quality, given illness experience O The marginal distribution of sleep quality 38% 33% Cold Which is a correct interpretation based on this graph? O Respondents who experienced headaches during the…
13. As part of its twenty-fifth reunion celebration, the class of 1988 at a state university held a reception on campus. In an informal survey, the director of alumni development asked 50 of the attendees about their incomes. The director computed the mean income of the 50 attendees to be $189,952. In a news release, the director announced, "the members of our class of 1988 enjoyed a resounding success. Last year's mean income of its members was $189,952!" a) what would be a statistical advantage of using the median of the reported incomes, rather than the mean, as the estimate of the typical income? b)The director felt the members who attended the reception may be different from the class as a whole. A more detailed survey of the class was planned to find a better estimate of the income as well as other facts about the alumni. The staff developed two methods based on the available funds to carry out a survey. Method 1: Send out an e-mail to all 6,826 members of the class asking them…
The accompanying table contains historical data on staff salaries (in dollars per pupil) for 30 schools sampled in part of a country in the early 1970s. I need help with this part attached. 3.86 2.80 2.71 2.95 3.08 1.802.60 3.32 2.52 2.12 2.58 2.682.76 2.85 3.67 3.84 3.43 2.122.94 2.83 3.04 2.43 2.18 3.693.21 3.67 2.39 2.61 3.42 3.45 The sample mean is 2.9183 The sample standard deviation is 0.5495
H. Six hundred adult Americans were asked by telephone poll, "What do you think constitutes a mlddle-class income?" The results are in Table 2.71. Also, Include left endpoint, but not the right endpoint. Relative 4 Salary ($) frequency <20,000 0.02 6. 20,000-25,000 0.09 25,000-30,000 0.19 8. 30,000-40,000 0.26 40,000-50,000 0.18 10 50,000-75,000 0.17 11 75,000-99,999 0.02 12 100,000+ 0.01 13 14 a. What percentage of the survey answered "not sure"? b. What percentage think that middle-class is from $25,000 to $50,000? c. If you constructed a histogram of the data. (Note: you do not actually have to make a histogram) i. Should all bars have the same width, based on the data? Why or why not? İi. How should the <20,000 and the 100,000+ intervals be handled? Why? 19 15 16 17 18 d. Find the 40th percentile e. Find the 80th percentile 20 LO2-1- LO2-2 - LO2-3 L02-6 - LO2-7 1. 2. 3.
State whether the mean, median, mode is being used. a. In 2002,there were as many people aged 25 and younger in the world as there were people age 25 and older. The majority of full time students carry a load of 15 credit hours per semester. The Average annual return on investment is 16.5 percent.
An article gave the following data on median worker pay (in thousands of dollars) and the 1-year percent change in stock price for the 13 highest paying companies in the United States. Percent Change in Stock Price Company Company 1 Company 2 Company 3 Company 4 Company 5 Company 6 Company 7 Company 8 Company 9 Company 10 Company 11 Company 12 Company 13 80 60 40 20 Median Worker Pay - 20 - 40 USE SALT 134.7 132.2 125.0 122.8 122.5 121.2 121.2 119.0 118.0 118.0 117.6 117.4 (a) Construct a scatterplot for these data. Percent Change in Stock Price 115.1 115 120 125 130 135 140 21.5 92.4 34.0 52.0 41.8 2.7 5.0 30.2 8.1 37.5 15.7 21.8 -44.8 Median Worker Pay Percent Change in Stock Price 80 60 40 20 - 20 -40 115 120 125 130 135 140 (b) Calculate the value of the correlation coefficient. (Round your answer to four decimal places.) Median Worker Pay Interpret the correlation coefficient. O There is a moderate, positive association between the percent change in stock price and median worker…
4) The table shows, for the years 1997–2012, the mean hourly wage for residents of the town of Pity Me and the mean weekly rent paid by the residents. Mean hourly wage (dollars) Mean hour. Mean weekly rent (dollars) Mean weekly rent (dollars) Year Year (dollar 116 1997 57 10.38 2005 28.99 59 113 1998 10.89 2006 28.63 2007 1999 62 11.96 112 36.75 14.55 2000 63 12.46 2008 86 17.90 2001 86 17.72 2009 90 2002 2010 119 28.07 90 14.67 131 35.24 2003 2011 17.97 100 122 2004 2012 22.23 31.87 115 Find the least squares line that uses mean hourly wage to predict mean weekly rent. Round values to the nearest ten-thousandth. Include a scatter plot with the regression lino
.2.2 The median incomes of females in each state of the United States, including the District of Columbia and Puerto Rico, are given in table #2.2.10 ("Median income of," 2013). Create a frequency distribution, relative frequency distribution, and cumulative frequency distribution using 7 classes. Table #2.2.10: Data of Median Income for Females $31,862 $40,550 $36,048 $30,752 $41,817 $40,236 $47,476 $40,500 $60,332 $33,823 $35,438 $37,242 $31,238 $39,150 $34,023 $33,745 $33,269 $32,684 $31,844 $34,599 $48,748 $46,185 $36,931 $40,416 $29,548 $33,865 $31,067 $33,424 $35,484 $41,021 $47,155 $32,316 $42,113 $33,459 $32,462 $35,746 $31,274 $36,027 $37,089 $22,117 $41,412 $31,330 $31,329 $33,184 $35,301 $32,843 $38,177 $40,969 $40,993 $29,688 $35,890 $34,381 2.2.6 Create a histogram and relative frequency histogram for the data in table #2.2.10.…
The data below represent US exports (in billions of dollars) to 18 countries in 2015 Canada 133.7 Mexico 56.8 Germany 23.5 Taiwan 18.4 Norway 16.6 China 12.0 Australia 12.0 Malaysia 8.5 Japan 67.5 UK 30.9 South Korea 26.6 France 14.4 Brazil 12.7 Belgium 12.5 Italy 8.8 Thailand 7.2 S.A 7.3 Austria 7.3 Find the mean and median. What is the most appropriate measure of central tendency for this sample? Why? Find the sum of squares, range, variance, and standard deviation for the sample. What is the z-score for the UK? What is the z-score for SA? What percent of the data falls between Saudi Arabia and Norway? What raw scores (two scores) correspond to the boundaries of the center 95% of the distribution?
A shopper at a local supermarket has spent these amounts in his last eight trips to the store: $32.92, 14.14, 30.80, 28.34, 75.58, 36.33, 33.51, and 22.94. Which statement about deleting the amount spent of $75.58 is false? a. The median of this data set may be more representative of the mean. b. The value of the mean would be reduced by $5.89. c. The value of the mean would not change. d. The value of the mean would be greatly reduced.
Is there a relation between incidents of child abuse and number of runaway children? A random sample of cities (over 10,000 population) gave the following information about the number of reported incidents of child abuse and the number of runaway children. (Reference: Federal Bureau of Investigation, U.S. Department of Justice.) City 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Abuse cases 113 33 41 60 52 99 31 56 15 67 106 59 45 74 84 Runaways 648 188 285 687 421 590 284 277 162 473 600 432 317 580 592 Use a 1% level of significance to test the claim that there is a monotone-increasing relationship between the ranks of incidents of abuse and number of runaway children. (a) Rank-order abuse using 1 as the largest data value. Also rank-order runaways using 1 as the largest data value. Then construct a table of ranks to be used for a Spearman rank correlation test. City Abuse CasesRank x RunawaysRank y d = x - y d2 123456789101112131415 Σd2 = (b) What is the level of…

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