15.19. The following bi-variate correlation coefficients aregiven for a trivariate datari2 = 0.98, r,,= 0.44 and r = 0.54%3D%3D1323Calculate the partial correlation coefficient between the first and thethird variables keeping the effect of the second variable constant.

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Answered: 15.19. The following bi-variate…

MATLAB: An Introduction with Applications

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ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

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Use the given data set to complete parts (a). (Use α=0.05.) a. Find the linear correlation coefficient, r, then determine whether there is sufficient evidence to support the claim of a linear correlation between the two variables. The linear correlation coefficient is r= (Round to three decimal places as needed.)
Q5. (a) For what range of values can the coefficient of correlation of a sample of 52 pairs be considered significantly different from zero at the 1% level of significance? (b) Do the following for the data Days after emergence, X Average dry matter Conventional, Y, Yield (g'plant) Improved, Y2 9. 35 52 170 270 49 50 71 180 91 250 270 3 10 104 Compute the coefficients of correlation between X and Y1, Yi and Y2, and X and Y2 Compute coefficients of determination between X and Y 1, and X and Y2. Interpret these coefficients. ii) iii) Test the hypothesis that the population correlation coefficient between Yi and Y: is 0.80 against the alternative that it is not. |Simple Regression & Correlation]
10.1.23 = Question Help Listed below are the overhead widths (in cm) of seals measured from photographs and the weights (in kg) of the seals. Construct a scatterplot, find the value of the linear correlation coefficient r, and find the critical values of r using a= 0.05. Is there sufficient evidence to conclude that there is a linear correlation between overhead widths of seals from photographs and the weights of the seals? Overhead Width 7.1 7.6 9.8 9.3 8.9 8.4 Weight 114 180 248 200 205 192 Click here to view a table of critical values for the correlation coefficient. Construct a scatterplot. Choose the correct graph below. OA. В. OC. OD. Aweight (kg) 300- Aweight (kg) 300- Aweight (kg) 300- Aweight (kg) 300- .... 100 100 100+ 100+ > 10 10 width (cm) 10 width (cm) width (cm) width (cm) Click to select your answer and then click Check Answer. 3 parts remaining Clear All Check Answer
x y A random sample of two variables, x and y produced the following observations: 19 7 13 9 17 8 9 11 12 9 25 6 20 7 3. Test the significance of the slope of the correction model at a = 0.05 17 8 1. Develop a scatter plot of the data. Does the plot suggest a linear or nonlinear relationship betwe dependent and independent variables? 2. Compute the correlation coefficient between x and y (to.05 = 1.9432)
O 0.029 QUESTION 15 The owner of Cypres Recordings investigated the relationship between sales (y) and the amount spent on advertising (x). A random sample of 3 Recordings gives the following information. (x1) = 17, (y1) = 26, x2= 20, y2 = 28, x3 = 32, y3=27 Calculate the correlation coefficient? (Round answer to three decimal places ex. 2.091)
For a data set of chest sizes (distance around chest in inches) and weights (pounds) of eight anesthetized bears that were measured, the linear correlation coefficient is r = 0.996. Use the table available below to find the critical values of r. Number of Pairs of Data n Critical Value of r 4 0.950 0.878 0.811 7 0.754 8. 0.707 9. 0.666 10 0.632 11 0.602 12 0.576 А. -0.707, +0.707 В. +0.707 С. +0.754 D. -0.707
The following results were obtained in a study of correlation coefficient between two variables X and Y : n=50, x =10, o,=3; y O, = 2; r. = 0.3. xy || However, on subsequent verification it was found that one value of X = 10 and one value of Y = 6 were inaccurate and hence weedėd out. With the remaining values how is the original value of correlation coefficient affected.
13.
5. Use the following table to answer the question given below. Coefficient of correlation Dimension Sig (p) with variable F A -0.053 0.000 B 0.821 0.000 C -0.755 0.000 D 0.255 0.000 E -0.632 0.000 7 Comment on the correlation coefficient values (i.e. the relationship and its strength) given in the above table.
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15.19. The following bi-variate correlation coefficients are given for a trivariate data r, = 0.98, r, = 0.44 and r, Calculate the partial correlation coefficient between the first and the third variables keeping the effect of the second yariahle constant 0.54 %3D 13 23