If you are told that R² = 0.965 and you know the slope is negative (i.e: X and Y have a negative, linear association), what is the correlation coefficient? (Round to THREE decimal places.)
If you are told that R² = 0.965 and you know the slope is negative (i.e:...
The coefficient of determination of a set of data points is 0.825 and the slope of the regression line is -3.85. Determine the linear correlation coefficient of the data. What is the linear correlation coefficient? r=| | (Round to three decimal places as needed.)
Q2 The coefficient of determination of a set of data points is 0.577 and the slope of the regression line is What is the linear correlation coefficient? r (Round to three decimal places as needed.) 3.48. Determine the linear correlation coefficient of the data.
We know that a researcher calculated a correlation coefficient for the association between smoking and lung cancer rate is 0.737 using the data in Table 1. In addition, the researcher have estimated x ̅ = 603.64, y ̅ = 20.55, s_x= 378.451, s_y= 11.725, and r = 0.737. a. Calculate the slope coefficient b for y ̂ = a + bx. Round the answer to the nearest 10,000th b= b. Calculate the intercept coefficient a for y ̂ = a...
What is the correlation coefficient when the point (10.2) is excluded? r = _ (round to three decimal places as needed.) % 10.2.11 Question Help 104• Refer to the accompanying scatterplot. a. Examine the pattern of all 10 points and subjectively determine whether there appears to be a strong correlation between x and y. b. Find the value of the correlation coefficient r and determine whether there is a linear correlation. c. Remove the point with coordinates (1,10) and find...
The coefficient of determination of a set of data points is 0.559 and the slope of the regression line is 4.45. Determine the linear correlation coefficient of the data. What is the linear correlation coefficient? requals=nothing (Round to three decimal places as needed.)
Which of the following is false? Correlation coefficient and the slope always have the same sign (positive or negative). If the correlation coefficient is 1, then the slope must be 1 as well. Correlation measures the strength of linear association between two numerical variables. If the correlation between two variables is close to 0.01, then there is a very weak linear relation between them.
a. Compute the sample covariance. 112.255 (Round to three decimal places as needed.) b. Compute the coefficient of correlation. r= 1.000 (Round to three decimal places as needed.) c. How strong is the relationship between X and Y? Explain. A. The variables X and Y have a perfect negative correlation because all points fall on a straight line with a negative slope. B. The variables X and Y have a perfect positive correlation because all points fall on a straight...
True or False: if the r(correlation coefficient) is closer to 1, the slope(beta) will be larger to reflect a stronger linear relationship between X and Y .
***PLEASE DO ALL THIS IS MY LAST QUESTION OF THE GIVEN AMOUNT OF QUESTIONS :( *** Which value of r indicates a stronger correlation:r 0.751 orr0.896? Explain your reasoning Choose the correct answer below. A. r=-0.896 represents a stronger correlation because 0.751 >-0.896. B. r=0.751 represents a stronger correlation because l-08961-10.751. C· r--0 896 represents a stronger correlation because 1-0 8961-10751. D. 0.751 represents a stronger correlation because 0.751> -0.896. The budget (in millions of dollars) and worldwide gross (in...