Profit and Working Capital. Sixteen industries of thisState have been ranked as follows according to profits earned in1970-71, and working capital for the year:IndustryRank (Profit) 1 2Rank (work-ing capital) 13 16 14 15 10 12 4 11 5 9 8 3 1 6 7 2Calculate the correlation coefficient,A BCD EFGHIJK L5 6 7M NO P8 9 10 11 12 13 14 15 163 4

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Answered: Profit and Working Capital. Sixteen…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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A portfolio is created by investing equally into two stocks: Stock A and Stock B. The table below provides the volatility of each stock as well as the correlation between the stock's return and the return of the portfolio. Find the correlation between the returns of these two stocks. Stock A Stock B Volatility 0.49 0.36 Correlation with Portfolio Return 0.71 0.30
Create scatterplots using the data in the spreadsheet linked above and display the equation for the regression line. What is the equation for the regression line that predicts mortgage amount using household income as the explanatory variable? Ý : Ex: 1.234 x + (Ex: 1.234) What is the interpretation of the slope? Pick What is the interpretation of the intercept? Pick Pick Household income when mortgage amount is 0 Mortgage amount when household income is 0 No practical interpretation 2
TIP ($) 250 225 200 175 150 125 100 75 50 25 0 0 A SONNY'S SCATTERPLOT B 100 200 300 400 Ⓒ2020 Radha Bose Florida State University Department of Statistics C D E SALE AMOUNT ($) *F H 500 600 700 800 900 1000 1100 1200 1. Which sale received the best tip, that is, which sale had the tip that was highest above the tip predicted for it? 2. Which data point has the smallest residual? 3. The residual for data point B is closest to
Activity 3.2. INFORMATION FROM CONTIGENCY TABLES • A group of patients were classified in terms of their smoking habits and the incidence of hypertension. Table 3 shows the distribution of the patients along the two variables. Hypertension Smoking Habits With Without Non-smokers 6 Moderate smokers 15 10 Heavy smokers 9 6 • Copy and complete the crosstabulation.
5. Economic growth Entrepreneurship employment No. of women entrepreneurs per 100 women 500 45 49 32 234 32 63 12 432 40 41 17 556 56 21 20 765 68 17 65 986 87 79 885 76 63 453 34 25 43 786 56 19 67 776 67 17 60 723 61 20 55 987 88 3 82 Study the table given above and answer the following questions. a. Identify the dependent and independent variables from the above data. b. Explain the relationship between these variables and conduct a literature review on them. c. Calculate correlation coefficient between the variables. Find the coefficient of non determination and the standard error estimate d. Fit regression line and interpret intercept and coefficients. (* e. Draw the scatter plot for Economic growth and entrepreneurship.
Outside Sr # Tempera (Number Sales X(outsid Y(sales) X*2 Y*2 Y=-5 e ture of Air tempera (Degrees Conditio ture) F) ning units sold) 68 3 68 3 4624 204 1.636 72 72 5 5184 25 360 4.883 78 7 3 78 7. 6084 49 546 9.754 81 12 4 81 12 6561 144 972 12.19 84 15 84 15 7056 225 1260 14.62 86 16 6 86 16 7396 256 1376 16.25 89 22 89 22 7921 484 1958 18.68 91 18 91 18 8281 324 1638 20.31 93 19 9 93 19 8649 361 1767 21.93 94 26 10 94 26 8836 676 2444 22.74 836 143 7059 2553 12525 143 sum Y= Plot a scatter diagram for the data provided on the table above and the linear regression line calculated in topic (b). Consider that: Y: number of air conditioning units sold X: outside temperature (degrees F) rds English (U.S.) Text Predictions: On acer
The table below gives the estimated world population (in billions) for various years. 1980 1990 1997 2000 2005 2011 Years Population 4400 5100 5852 6080 6450 7000 Is the correlation significant? yes cannot be determined yes only to some extent O no
A group of farmer wants to know the correlation between the certain amount of fertilizer and the crops yield. With the same land area and different amount of fertilizer yields the following crops. Fertilizer 23 18 15 12 13 14 15 23 20 20 19 22 12 10 16 crops 78 66 54 48 65 71 77 57 69 74 56 60 54 59 63 Does it appear there is relationship between the fertilizer and crops? Compute the coefficient of correlation. Determine at 0.05 level of significance whether the correlation is greater than zero.
IQuestion 1] a. The following table shows demand (x) and supply (v) for a sample of a certain commodity. 12 7 11 19 5 21 3 4 17 14 3 21 28 6 43 1 12 30 y i. Plot the points on a scatter graph and state the relationship between the two variables. ii. Calculate the value of the product moment correlation coefficient for the data and comment briefly. b. Company Y wants to determine the cost-volume relation between its factory overhead cost and number of units produced. The volume and the corresponding total cost information of the factory for past eight months are given below: Month 2 3 4 5 6 7 8. Units 1,520 1,250 1,750 1,600 2,350 2,100 3,000 2,750 FOH S36,375 $38,000 $41,750 S42,360 $55,080 SS48,100 $59,000 $56,800 Factory Overhead costs of Company Y i. Use the high-low method to split its factory overhead (FOH) costs into fixed and variable components and create a cost volume formula. ii. Briefly explain why this method is unreliable as a means of cost estimation and suggest one other…
The table below gives the estimated world population (in billions) for various years. 1980 1990 1997 2000 2005 2011 Years Population 4400 5100 5852 6080 6450 7000 What is the value of the correlation coefficient (r)? O 0.558 Ⓒ -0.894 0.998 O- 0.489
X1 X2 Y X1 1.0000 0.7139 0.6147 X2 0.7139 1.0000 0.3098 Y 0.6147 0.3098 1.0000 This is my correlation matrix table. Using this, which variable explains the greatest proportion of variation in Y? What is the proportion of variation in Y that can be explained by X1? What is the proportion of variation in Y that can be explained by X2? Also what is multicollinearity?

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