The correlation coefficient is r
Q: The simple correlation coef.icients between profits X1), sales (X2) and ad- vertising expenditure…
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Q: correlation coefficient is r=
A: Correlation: Correlation is the extent of a linear relationship between two variables X and Y. To…
Q: QI For the next data ,the correlation factor (r) is : * 2 5 8 11 14 And
A: Given, X 2 5 8 11 14 And y = 4x To find, Correlation factor (r) = ? Formula: r =…
Q: Match the linear correlation coefficient to the scatter diagram. r= -0.546 Choose the correct graph…
A: The correlation coefficient is -0.546.
Q: The correlation between x and y is
A: Answer: Here, option A is right. Approximately, 0.50 answeris correct.
Q: and the r = 0.6241. What is the correlation coefficient for this data set? r =
A: We have given that The regression equation is y^ = 70.25 + 54.57x and r2 = 0.6241
Q: Based on the data shown below, calculate the correlation coefficient (to three decimal places) y 4…
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Q: A researcher wants to determine if the exam scores of the students are dependent on the length of…
A: X Y X.Y X.X Y.Y 1.5 80 120 2.25 6400 3.0 83 249 9 6889 1.25 83 103.75 1.5625 6889 0.5…
Q: If Ꜫx=12, Ꜫy=42, Ꜫx²=46, Ꜫy²=542, Ꜫxy=157and n =4, find the correlation coefficient,
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Q: Find the Covariance and the Correlation between X and Y
A: Given: n=5 The covariance and correlation are calculated as…
Q: A study of new cars finds that the correlation between the weight of cars (pounds) and their city…
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Q: The relationship between the number of hours a person practices a task and the time it takes them to…
A: The value of correlation coefficient is obtained below:From the given information the value of r2 =…
Q: please highlight the correct answer Choose all that apply
A: Solution: Positive correlation: If a change in one variable tends to change in another variable in a…
Q: Use the value of the linear correlation coefficient r to find the coefficient of determination and…
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Q: Find probable error, when the coefficient of correlation is 0.8 and number of items is 64 and…
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Q: Which of the following r-values represents the strongest correlation? A. 0.55 O B. 0.45 C. 0.65 D.…
A: The correlation coefficient ranges from -1 to +1 Negative symbol indicates negatively correlated and…
Q: Find the correlation coefficient for the following data: x: 1 2 3 4 5 6…
A: From the provided information, X Y 1 3 2 2 3 4 4 3 5 7 6 5…
Q: Find the correlation coefficient (r)? xy
A: Given data,
Q: What do you mean by positive and negative correlation? Write down the properties of the coefficient…
A: Positive Correlation: If the coefficient of correlation (r) has a positive value, then the…
Q: The df for the correlation are based on the number of observations minus 2. a) True b) False
A: Correlation : A correlation is a statistical test that demonstrates the relationship between two…
Q: The linear correlation coefficient for the second data set is R=
A: From given data of 2nd data set, X Y X*Y X*X Y*Y 10 11.14 111.4 100 124.0996 8 10.14 81.12…
Q: What is the value of the correlation coefficient for the data in the table? y 2696 1198 2099 11 3793…
A: Given Correlation coefficient (r) Correct option is B
Q: Find (i) the Mean of X, (ii) Coefficient of correlation between X and Y.
A: here given N= 50 regression equation X on Y is 3Y-5X = -180 variance of X is 9/16 of variance of X…
Q: Find the correlation
A: Answer: For the given data,
Q: Use the value of the linear correlation coefficient r to find the coefficient of determination and…
A: From the provided information, Correlation coefficient (r) = 0.853
Q: A researcher finds that the amount of exercise one gets a week and cortisol levels are negatively…
A: Given: It is given that correlation is negative that is r = -0.60
Q: The symbol that is used for the linear correlation coefficient is _______.
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Q: Which value of r, the correlation coefficient, represents data with a strong positive linear…
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Q: Which of the following values could not represent a correlation coefficient? r= 0.98 r = 1.09 r =…
A: The value of correlation coefficient lies between -1 and +1.
Q: 9) Determine which plot shows the strongest linear correlation. A) УЛ B) D) C) УЛ УЛ
A: Correlation is the measure of linear association between two variables. The variables are said to be…
Q: Which of the following result is the strongest correlation? r=.68, p=.03
A: Correlation: The extent of linear relationship between two variables is called as correlation.…
Q: Compute the correlation coefficient, r.
A: The correlation coefficient formula is, r=n∑ixy-∑ix∑iyn∑ix2-∑ix2n∑iy2-∑iy2 The sums are, Chest(x)…
Q: Compute the correlation coefficient p for X and Y.
A: The expected value of x2 is,…
Q: Squaring the Pearson correlation coefficient (r2) tells us that
A: Coefficient of Determination: Square of the correlation coefficient is known as the coefficient of…
Q: identify linear correlation coefficient r
A: The linear coefficient of correlation is a number calculated directly from the data which measures…
Q: and the r = 0.4096. What is the correlation coefficient for this data set? r =
A: Given that Coefficient of determination (r2) = 0.4096 We know that Correlation coefficient (r) =…
Q: If (r) is the correlation coefficient between two variables, then:
A: We need to use the concept of correlation
Q: Which scatter diagram shows the strongest positive correlation? 1) Y 2) 3) 4) 01
A: We have to define which is strong positive correlation
Q: Which of the following correlation coefficients indicate the strongest relationship between two…
A: The correlation coefficient is used to find the direction and magnitude of two quantitative…
Q: The linear correlation coefficient is r
A: The linear correlation coefficient tells the strength of the linear relationship between two…
Q: Choose the most likely correlation value for this scatterplot: r = 0.436 Ir = 0.100 r= -0.897 r =…
A: Correlation between two variables measure the strength and direction between two variables. It…
Q: Find the correlation coefficient.
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Q: Which plot indicates a correlation of 0.7? 150 10
A: There are two types of correlation: positive correlation and negative correlation Two variables are…
Q: e. Compute the covariance and correlation coefficient r between the right tire pressure. f. How do…
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Q: Which of the following signifies the strongest correlation? -1.02 -0.90 0.91 1.01
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Q: Determine the value that the correlation, r, could be for the following scatter plot. -0.8 0.04 -1 0…
A: Here given the scatterplot between two variables. We have to identify the value of correlation…
Q: e7. Calculate coefficient of correlation for the following data by short-cut method: 54 58 62 66 68…
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