Y g e ra 38. If covariance between X and Y variables is 10 and the variances of X and Y are respectively 16 and 9, find the coefficient of correlation.
Q: Is there a significant linear correlation between the following variables (x and y)? Subject ID 1…
A: Here, x y x-x y-y (x-x)(y-y) (x-x)2 (y-y)2 10 20 -10.1429 -21.1429 214.4503 102.8784 447.0222…
Q: O a.r = -0.2548 O b.r = -0.9382 O c.r= 0.9963 O d.r= 0.0767
A: We have given that, Which of the following linear correlation Coefficients suggests a weak negative…
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A: The correlation coefficient can be obtained by excel function as follow: Enter the data into excel…
Q: If the coefficient of correlation is 0.90, the percentage of the variation in the dependent variable…
A: The objective of the question is to determine the percentage of the variation in the dependent…
Q: Calculate the co-efficient of correlation for the following data : x : 1 5 4 3 8 8 y : 2 10 8 5 3 13…
A: Given, X Y X.Y X.X Y.Y 1 2 2 1 4 5 10 50 25 100 4 8 32 16 64 6 8 48 36 64 2 5 10 4 25…
Q: If the Pearson correlation (r=0.9) this means that: Select one: a. 81% of the dependent variable…
A: The coefficient of determination signifies the total variation in Y(the response variable) accounted…
Q: f a relationship has a weak, positive, linear correlation, the correlation coefficient that would be…
A: Correlation is defined as the linear relationship between the two variables. The range of the…
Q: Let X and Y be two independent random variables. If the variance of X is 12 and the variance of Y is…
A: let x and y be two independent random variables if the variance of x is 12 and the variance of y is…
Q: 1. Find the correlation coefficient using Spearman rho and interpret results. Road width in feet (x)…
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Q: Years of Education of Parent 13 9 7 12 12 10 11 Years of Education of their Child 13 11 7…
A: we have to calculate corretion between them
Q: Calculate the linear correlation coefficient for the data below:
A: Given the data for X and y variables. To find, Correlation coefficient r = ?
Q: Find the correlation coefficient r for the given set of data. x y 2 9 4 11 5 19 7 23 How do you…
A: We have given that the data in tabulation form of two variables X and Y. Correlation coefficient…
Q: Compute for the coefficient of correlation coefficient and interpret its meaning.
A: Compute for the coefficient of correlation coefficient and interpret its meaning.
Q: Which of the following best describes the Pearson correlation for these data? X Y 2 5 5 1…
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Q: Listed below are paired data consisting of amounts spent on advertising (in millions of dollars) and…
A:
Q: Listed below are paired data consisting of amounts spent on advertising (in millions of dollars) and…
A: Let X=advertising cost Y= Profit X=3,4,5,6,7,8,9,10 Y=18,18,25,26,27,23,26,34
Q: A random variable X is normally distributed with a mean of 121 and a variance of 121, and a random…
A: The mean of the random variable W=7X+6Y is, μW=E7X+6Y=7μX+6μY=7×121+6×170=847+1020=1867 Thus, the…
Q: The data below is 8 observations of Math SAT scores (x) and scores on Math placement test (y).…
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Q: I.M. Smart, a statistics fanatic wants to investigate if there is a positive correlation between the…
A: Given information: A random sample of n = 7 students is considered. X = number of hours Y = grades…
Q: The multiple correlation coefficient of a criterion variable with two predictor variables O A. is…
A: multiple correlation coefficient criteria variable with two predictor variables is exactly the same…
Q: W = 6X + 3Y (Do not round.) (Do not round.)
A: X and Y are normally distributed random variables μx=81var(X)=81 μy=200var(Y)=400r=0.5
Q: Find the value of the linear correlation coefficient r.
A: From the given information, x y x^2 y^2 xy 40 9 1600 81 360 10.5 8 110.25 64 84 34 9 1156…
Q: Imagine that someone in campus life wants to convert the “Studying” scale so it’s expressed as the…
A: The data table given is:
Q: amount and Y represents the expense amount. The variance of the total cost is 100, the standard…
A: The correlation coefficient is 0.8The variance of the total cost is 100The the standard deviation of…
Q: The paired data below consists of test scores and hours of preparation for 5 randomly selected…
A: strong positive correlation.
Q: If the coefficient of correlation between two variables is -0.88, then the percentage of variation…
A: We have given that, Correlation coefficient (r) = -0.88 Then, We will find the percentage of…
Q: can someone please help me find the covariance and correlation between x and y?
A: Dataxyx2y2x⋅y389642462364127049008264416152225430∑x=39∑y=14∑x2 =383∑y2 =76∑xy=82
Q: A grocery store manager did a study to look at the relationship between the amount of time (in…
A: Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-parts at a…
Q: Correlation Analysis 12. Compute Karl Person's coefficient of correlation: 172 148 162 3.5 183 160…
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Q: The data shown to the right for the dependent variable, y, and the independent variable, x, have…
A: The independent variable is x. The dependent variable is y. The given data represents simple linear…
Q: The data below is 12 observations of Fall semester student credit hours (x) and Spring semester…
A: We have given that, X :- 6, 11, 16, 12, 7, 10, 8, 15, 13, 9, 5, 14 Y:- 3, 15, 13, 16, 9, 7, 4, 18,…
Q: Calculate the Regression Line and Correlation Coefficient for the following heights (inches) of…
A: The independent variable is heights of father (X) in inches , and the dependent variable is heights…
Q: A study was done to look at the relationship between number of vacation days employees take each…
A: The data is given as- x: vacation days y: sick days 3 4 13 0 1 10 6 1 12 0 1 6 13 0…
Q: Assuming a linear relationship between X and Y, if the coefficient of correlation (r) equal -0.30,…
A: We have given that, Assuming a linear relationship between X and Y, if the coefficient pf…
Q: *18 Calculate Coefficient of Correlation between x and y. 4 6. y: 9. 13
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Q: Gestation and Average Longevity Is there a relationship between the gestation of a sample of animals…
A: Hello, since your question has multiple parts, we will solve the first question for you. if you want…
Q: Calculate the coefficient of correlation from the following data and comment on the result :…
A: X Y X.Y X2 Y2 16 23 368 256 529 12 22 264 144 484 18 24 432 324 576 4 17 68 16 289 3…
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- Listed below are the budgets (in millions of dollars) and the gross receipts (in millions of dollars) for randomly selected movies. Answer parts a-c. Budget (x) Gross (y)60 6091 6050 4839 62193 558105 14087 52 a. Find the value of the linear correlation coefficient r.The data below is 12 observations of Math SAT scores (x) and scores on Math placement test (y). Calculate the linear correlation coefficient, rr. Enter your answers to two decimal places. X Y 420 426 410 360 600 575 460 538 550 553 480 407 560 635 450 388 400 383 430 402 470 462 440 437 rr =How does multiplying each score by a (positive) constant affect the value of the correlation? The correlation changes sign. The correlation does not change. The correlation decreases. The correlation increases.
- Match the linear correlation coefficient value that best approximate each given scatter diagram. The scales on the x-axis and y-axis are the same for each scatter diagram. Explanatory (II) Explanatory (I). Explanatory Explanatory (III) (IV) Response Response ResponseAfter gathering data about the number of starfish and measuring the pollution in areas of the ocean you find a negative linear correlation between pollution levels and number of starfish. What can you conclude based on this information? a. There is a confounding variable that is affecting both pollution and starfish. b. As pollution rises the number of starfish falls c. That pollution is causing starfish to die, leading to the negative correlation d. That pollution is supporting starfish, leading to the negative correlationBelow shows the linear relationship between first year college GPA and high school GPA For both variables the GPA ranges from 0 to 4 in this sample. However, for the high schools sampled in this region, the true range of GPA is 0 to 5, how might this affect the correlation between these two variables?