The coefficient of correlation lies between -1 and +1. Symbolically, -1

Q: The simple correlation coef.icients between profits X1), sales (X2) and ad- vertising expenditure…

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Q: 1 The coefficient of correlation between X andY is and Var(X) = 0,? = a, Var(Y) = o,? = 4a and…

A: Given correlation coefficient, rxy= 1/3

Q: The correlation coefficient, r, Is a number between 0 and 1 O-00 and 00 O-1 and 1 O-10 and 10 O O…

A: Here we need to find the values between which the correlation coefficient r lies.

Q: A correlation of r = 0.64 is stronger than which of the following correlations?   r = –85 r = –71 r…

A: A correlation of r = 0.64 is stronger than which of the following r = –85 r = –7 r = 0.5 r = –6 All…

Q: If a linear relation exists between the variables x and y, then the coefficient of correlation…

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Q: The correlation coefficient, r, is a number between O-10 and 10 00 and 1 O-∞ and 00 00 and 100 O-1…

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Q: 44. A researcher measures driving distance from college and weekly cost of gas for a group of…

A: We have given that the statement about to the correlation coefficient. Here, need to find out the…

Q: If the correlation coefficient is -1, then the relation is a ___

A: here use basic of correlation coefficient

Q: A large sample of data is collected in order to study the relationship between the two variables X…

A: A large sample of data is collected in order to study the relationship between the two variables X…

Q: The value of correlation coefficient between variables X and Y lies between: A. 1 and 2 B. 0 and 1…

A: We have to identify correct option.

Q: A certain middle school opens at 7 A.M., and classes begin at 8 A.M. A sociologist gathered data on…

A: Negative Correlation:- Negative correlation is a relationship between two variables in which one…

Q: Which of the following statements is/are true for a negative correlation? i)   The slope of the…

A: The term Correlation is used to measure how strong the linear relationship between two variables is.…

Q: Calculate the correlation coefficient from the following results N-10, ΣX- 350/ Σ Υ- 310 Σ (X-35=…

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Q: (d) Does a linear relation exist between the weight of the bear and its length? The variables weight…

A: (d)   Determine whether there exists a linear relation between the weight of the bear and its…

Q: Test the claim that the linear correlation coefficient of a population is statistically significant.…

A: (1) If he correlation is found to be statistically significant that means that changes in x cause…

Q: I need the answer as soon as possible

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Q: 9. Tell whether the correlation coefficient would be closest to -1, 0 or 1. a. b. 150 150 150 100…

A: Given : Three diagram :

Q: n= 18 Σ= 100 ΣΥ= 10 Σv= 3410, Σ1630 ΣΥ-25115 Calculate the linear correlation coefficient r.

A: We know that, correlation coefficient r is defined as, r=Σ(Xi-x̅)(Yi-ȳ)/√Σ(Xi-x̅)2*Σ(Yi-ȳ)2

Q: 6. Eddie finds that there is a significant negative correlation between variables X and Y. Given…

A: Correlation is the measure of association between the variables. A negative correlation means that…

Q: Calculate correlation coefficient from the following data : N= 10 , Σ X= 140 , Σ Υ-150 Σ (X-10)=180,…

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Q: Calculate correlation coefficient from the following results : N 10 ΣΧ 100 I(X-10) = 180, £(Y-15)² =…

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Q: Which of the following statements does not contain a mistake? A. The correlation between…

A: Solution: Correlation: Two variables are said to be correlated if there is an association between…

Q: n=13, sum x=120, sum y=340, sum xy=3970, Sigma x^ 2 =1320, Sigma y^ 2 =255555 Calculate the linear…

A: Given n=13, sum x=120, sum y=340, sum xy=3970, Sigma x^ 2 =1320, Sigma y^ 2 =255555

Q: True or False 1. Var(aX + b) = a Var(X) 2. The correlation coefficient ranges from 0 to 1.

A: Correlation is a measure of the relationship between two variables. If they are not correlated, then…

Q: The correlation coefficient, rr, is a number between 0 and 1 -10 and 10 −∞-∞ and ∞∞ 0 and 100 0…

A: Solution: Correlation: Two variables are said to be correlated if there is a linear association…

Q: "What is the correlation coefficient for this condition? X is the temperature in Mars, Y is the…

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Q: Q5. The correlation coefficient will be zero when А. Е(X— X)(Y— Ў) —D 0 B. E(X – X)² = 0 С. | C. E(Y…

A: We know that.  If r is equal to +1 then there are strong positively correlation and If r is equal to…

Q: A. 4. Calculate Coefficient of Correlation from the following results : n = 10, EX = 100, EY = 150,…

A: Given data is n=10∑x=100∑y=150∑(x-10)2 =180 ∑(y-15)2 = 215∑(x-10)(y-15)=60

Q: the strength of correlation is indicated by: both (a) and (b) (B) its sign (+ or -) None of the…

A: the strength of correlation is indicated by

Q: w would you describe a correlation of -1? - There is no relationship between x and y. - There is a…

A: Correlation tells how the variables are linearly related with each other. It represents the…

Q: Which correlation coefficient does not belong with the other three? Or = 0.98 Or = 0.96 Or = - 0.1…

A: Correlation quantifies the strength of relationship between 2 variables. The value of correlation…

Q: What would you estimate the correlation coefficient to be? -0.9-0.6 0 0.6 0.9 O O O O

A: The given plot is the scatter plot for a set of bivariate data.

Q: Which of the following is true about r, the linear correlation coefficient? (Choose all that apply.)…

A: 1.) If r=1, then the line will have a positive slope. This is the case of a perfect correlation. All…

Q: What is indicated by a Pearson correlation of r +1.00 between X and Y? O Every increase in X causes…

A: Solution: From the given information, r=+1.

Q: Past data on household income and expenditure reveal that: (a) The average absolute increase in…

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Q: Which of the following is true of the correlation r? It measures the strength of the straight-line…

A: For given MSQ, we need to select the correct statements which are true for correlation r.

Q: Example 4. Calculate Coefficient of Correlation from the following results : n= 10, ΣX = 100, ΣΥ -…

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Q: 45. A researcher measures IQ and weight for a group of college students. Which kind of correlation…

A: We have given the following statement about the correlation.

Q: 9. Tell whether the correlation coefficient would be closest to -1, O or 1. 150 b. 150 150 100 100…

A: Given, Different Scatter Plots a, b and c. To find: The closest value of the correlation coefficient…

Q: Which of the following correlation (r) show a negative association between 2 variables?

A: The correlation coefficient r shows the strength and direction of the linear relationship between…

Q: te correlation coefficient from the following N= 10, EX= 140, E Y= 150 Σ (X- 10)2Ξ180, Σ (Y- 15)2215…

A: Given, N = 10 ∑X = 140∑ Y = 150∑(X - 10)2 = 180 ∑(Y - 15)2 = 215 ∑(X = 10)(Y - 15) = 60     To…

Q: (b) Compute the correlation coefficient between the price of eggs and the price of milk. Round the…

A: Given data, Dozen eggs (x) gallon of milk(y) 1.77 3.58 1.94 3.58 1.67 3.47 1.65 3.47…

Q: 44. If p- value = 0.02 for Ho : p = 0 vs H : p + 0, which statement is true at the 5% level of…

A: As per our guidelines, we are allowed to answer first question only. thanks   Q-44) Provided ,…

Q: The strength of a correlation is indicated by: O (A) its size of coefficient O None of the answers…

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Q: 5If the linear correlation coefficient between the weights (in kg) and heights (in inches) of 6…

A: The value of r^2 represents the percentage of variation in the dependent variable explained by the…

Q: ue or False. If x and y have a correlation coefficient that is close to zero (r = 0), it is right to…

A: If r=0 , then there is no correlation. If r=1 , then there is perfect positive correlation If r=-1 ,…

Q: 4. Put the r-values in order from the weakest to strongest correlation. r = -0.90 r = 0.050 r= 0.80…

A: Given r-values  r = -0.90 r = 0.050 r = 0.80 r = -0.72 r = 0.45 r= -0.88 r = 0.97

Q: In rank correlation coefficient formula, sum of squared differences between the ranks is divided by…

A: We have to select the correct option which divides the sum of squared differences between the ranks…

Q: 01. The value of the perfect positive correlation is -1 (a) True

A: Hello! As you have posted 3 different questions, we are answering the first question. In case you…