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 highestpaying companies in the United States.CompanyCompany 1Company 2Company 3Company 4Company 5Company 6Company 7Company 8Company 9Company 10Company 11Company 12Company 13- 20-40Percent Changein Stock PriceMedianWorker Pay80604020134.7-20-40132.2125.0122.8122.5121.2121.2119.0118.0(a) Construct a scatterplot for these data.Percent Change118.0117.6117.4115.1Percent Changein Stock Price21.8115 120 125 130 135 14092.433.752.441.8in Stock Price80M604020115 120 125 130 135 1402.75.130.07.837.215.722.1-44.8MedianWorkerPayMedianWorkerPayOPercent Changein Stock Price80604020- 20-40Percent Changein Stock Price80604020115 120 125 130 135 140- 20-40115 120 125 130 135 140(b) Calculate the value of the correlation coefficient. (Round your answer to four decimal places.)MedianWorkerPayMedianWorkerPay↑

From the given information, X(median worker pay) Y(Percent change in stock price) X^2 Y^2 XY…

Answered: An 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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Consider the following data:Monthly Profit of a Gym Month Jan-12 Feb-12 Mar-12 Apr-12 May-12 Jun-12 Jul-12 Aug-12 Sep-12 Profit ($) 5,9015,901 5,6535,653 5,1545,154 4,8774,877 5,2455,245 5,7985,798 6,9196,919 6,2346,234 5,9585,958 Step 1 of 5 : Determine the three-period moving average for the next time period. If necessary, round your answer to one decimal place.
John Kittle, an independent insurance agent, uses a five-year moving average to forecast the number of claims made in a single year for one of the large insurance companies he sells for. He has just discovered that a clerk in his employ incorrectly entered the number of claims made four years ago as 1,400 when it should have been 1,200.a. What adjustment should Mr. Kittle make in next year’s forecast to take into account the corrected value of the number of claims four years ago?b. Suppose that Mr. Kittle used simple exponential smoothing with a = .2instead of moving averages to determine his forecast. What adjustment is now required in next year’s forecast? (Note that you do not need to know the value of the forecast for next year in order to solve this problem.)
Construct a graph that best demonstrates the underlying trend of the following data about eagles in the US. What are the two locations that show the lowest proportion of Avian Pox? Location Total Eagles Eagles with Avian Pox Northeast 121 8 Southeast 283 12 North Central 541 28 South Central 501 36 Northwest 343 24 Southwest 112 20 Alaska 503 8 Construct a very simple bar graph that best demonstrates the number of injuries that occurred for each sport. Sport Injuries Baseball 165,842 Basketball 501,251 Bowling 20,878 Football 451,961 Ice Hockey 19,035 Soccer 208,214 Softball 121,175 Tennis 23,611 Volleyball 60,159
The data in the table characterizes the income distribution for a country. Income category Share of income (%) Cumulative share of income (%) first quintile 7.0 --- second quintile 9.0 16.0 third quintile --- 37.0 fourth quintile 25.0 --- fifth quintile 38.038.0 --- What percentage of the total population is categorized as belonging to the second quintile? Give your responses as whole numbers. Percentage of population in second quintile:__________% What percentage of the total income for the country is earned by the third quintile? Percentage earned by the third quintile:__________% What is the cumulative share of income earned by the poorest 80% of the population? Percentage earned by the poorest 80%:__________%
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…
A regional Internet provider keeps records of complaints received from its customers. Complaints for last month are listed in the following table. What percent of the complaints are due to the categories Long customer service wait times or Unreliable/Frequently stops working? Round your answer to two decimal places, if necessary. Customer Complaints Type of Complaint Too expensive Unreliable/Frequently stops working Page loading too slow Download/Upload speed too slow Extra data usage charges Poor tech support Long customer service wait times Incorrect billing Long wait for installation Frequency 174 242 111 98 67 103 59 46 75
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
The monthly cost for health care for an employee and two dependents in a certain year is given in the following table. Provider Cost Provider Cost Maxicare $415.31 Kaiser $4337 Cigna $424.74 Aetna $436.26 Health Net $427.29 Blue Shield $442.25 Pacific Care $428.06 Omni Healthcare $457.90 Redwoods Plan $431.53 Lifeguard $457.64 Draw a box plot for the monthly costs of health care (ranked from lowest to highest). 0415 420 425 430 435 440 0425 430 435 440 445 450 455 420 430 440 450 420 430 440 450
- The percent increase in enrollment at a junior college for the last 5 years were 9.8%, 14.8%, 12.7%, 10.9% and 18.7%. Determine the geometric mean percent increase over the last 5 years.
what is the mean of the data set?
A sample of 20 financial analysts was asked to provide forecasts of earnings per share of a corporation for next year. The results are summarized in the following table:Forecast ($ per share) Number of Analysts9.95 < 10.45 210.45 < 10.95 810.95 < 11.45 611.45 < 11.95 311.95 < 12.45 1a. Construct the histogram.b. Determine the relative frequencies.c. Determine the cumulative frequencies.d. Determine and interpret the relative cumulative frequencies.
The following graph shows the average grade point average for a particular college from 2004 until 2011. Average GPA 3.20 OA OC OD 3.15 3.10 3.05 3.00 2.95 2.90 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 Year Which one of the following statements is correct? A) Historically, the Average GPA of the college tends to decrease. B) There appears to be no relationship between Year and Average GPA. C) Year is the dependent variable in the graph. D) Average GPA is the dependent variable in the graph.

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