ESTION SIXA. The following data set shows the monthly demand for a specific computerprinter at various price levelsDemandPrice36$7023$8012$9016$10014$11010$120$130$140(i) Calculate the correlation coefficient between demand and price.(ii) Test the significance of the correlation coefficient betweenand demand using a=0.01. B. Describe the procedure to identify the line of best-fit y =a+bx including theformulas for a and b.C. The following data set shows the payroll in thousand kwacha for eightmajor football teams for a particular season and number of times theteams won that season.PayrollWinsK20989K13974K10186K7474K6768K4967K11997K9892(i) Identify the linear equation that best fits the data and interpret theresults.(ii) Predict the number of wins for a team that has invested k90thousand in payroll.

Given data indicates the monthly demand for a specific computer printer at various price levels. The…

Answered: SIX A. The following data set shows the…

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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Let x be the average number of employees in a group health insurance plan, and let y be the average administrative cost as a percentage of claims. x 3 7 15 32 75 y 40 35 30 26 18 (a) Make a scatter diagram of the data and visualize the line you think best fits the data. Flash Player version 10 or higher is required for this question. You can get Flash Player free from Adobe's website. (b) Would you say the correlation is low, moderate, or strong? positive or negative? strong and negative moderate and negative strong and positive low and negative low and positive moderate and positive (c) Use a calculator to verify that Σx = 132, Σx2 = 6932, Σy = 149, Σy2 = 4725, and Σxy = 2997. Compute r. (Round your answer to three decimal places.)r = As x increases, does the value of r imply that y should tend to increase or decrease? Explain. Given our value of r, we cannot draw any conclusions for the behavior of y as x increases. Given our value of r, y should tend to…
For the accompanying data set, (a) draw a scatter diagram of the data, (b) by hand, compute the correlation coefficient, and (c) determine whether there is a linear relation between x and y. Click here to view the data set. Click here to view the critical values table. Critical values for the correlation coefficient Critical Values for Correlation Coefficient Data set 3 0.997 4 0.950 2 4 6. 6. 7 0.878 0.811 y 4 8. 12 14 19 7 0.754 8 0.707 0.666 10 0.632 11 0.602 12 0.576 13 0.553 14 0.532 15 0.514 16 0.497 17 0.482 18 0.468 19 0.456 20 0.444 21 0.433 22 0.423 23 0.413 24 0.404 25 0.396 26 0.388 27 0.381 28 0.374 29 0.367 30 0.361 Print Done n
The following data measured the stress hormone of steelhead fish as a function of the oxygen content in the water. These data are given below: oxygen 25 36 48 59 62 72 80 100 100 137 hormone 155 184 180 220 280 163 230 222 241 350 Construct a scatterplot and discuss its characteristics Does there appear to be a relationship between water oxygen levels and hormone levels?
CPI represents a country’s Consumer Price Index and MS represents the country’s Money Supply (in £ billions) over a 10-year period. CPI MS 95 8 99 9 100 10 105 12 110 15 120 20 122 20 123 21 123 21 124 21 Calculate the Pearson correlation coefficient between the two variables. Comment on the strength of the relationship between CPI and MS.
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.
q8

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