The coefficient of correlation between X and Y is - and o = a, of = 4a, and %3D %3D ož = 114 where Z = 3X – 4Y. Then the value of the constant a is

Q: Based on the data shown below, calculate the correlation coefficient (to three decimal places). This…

A: Correlation coefficient measures the strength and direction of the linear relationship between two…

Q: Question 8 Find the value of the linear correlation coefficient r. x| 62 53 64 52 52 54 58 v 158 176…

A: Calculate the mean for x and y.

Q: The Pearson correlation coefficient r between the two variables x and y is X Values Y Values 1.5 70…

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Q: Based on the data shown below, calculate the correlation coefficient r (to three decimal places)

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Q: There is a relationship in the form of Y = 1 / (a ​​* x ^ b) (x ^ b: means x over b). a) Calculating…

A: a) To calculate the correlation coefficient between X and Y values using excel, the following…

Q: A) y= Q25. The correlation coefficient (r) between X A)-0.8987 B) 0.8632 C) -0.9603 enswer: D)

A: We have given that,  X :- 3, 4, 6, 8, 10 Y:- 8, 6, 7, 5, 3 Then,  We will find the correlation…

Q: The correlation coefficient between the variables x and y is r=0-60. If og=1·50, oy=2.00, E=10 and…

A: Given,r=0.60σx=1.50  ,  σy=2.00 ,x¯=10    ,   y¯=20

Q: Calculate correlation coefficient from the following results : N = 10, EX = 100, ΣX-10,- 180,…

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Q: Complete the table below and use the formula to calculate the correlation coefficient r and…

A: x y x2 y2 xy 1 11 12 = 1 112 = 121  1 x 11 = 11 8 11 82 = 64 112 = 121  8 x 11 = 88 10 8 102 =…

Q: Suppose that you run a correlation and find the correlation coefficient is -0.436 and the regression…

A: Here you're given the correlation coefficient (r) is -0.436 and the regression equation is y⏞ = -…

Q: Kahl Co wants to know whether there is a correlation between the number of labour hours worked (x)…

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Q: The heights of some students were obtained. Without computation, which do you think is the…

A: Here we uave given the multiple choice question about the correlation coefficient between students…

Q: d) The covariance Cxy . e) The correlation coefficient Px.x-

A: Given Joint probability density function of X and Y, we need to find Covariance and correlation…

Q: Earnings per share, x 1.41 4.4 Dividends per share, y e 0.86 nterpret the correlation. Choose the…

A: Karl Pearson's correlation coefficient is given by :  rxy= cov(x,y)σx.σy

Q: Which of the following correlation coefficients indicate the strongest linear relationship between…

A: Option (c) rxy=-0.6, is the correlation coefficient that indicates the strongest linear relationship…

Q: Calculate Coefficient of Correlation from the following results: 100, ΣΥ- 150 Σ(X- 10)%= 180, Σ (Y-…

A: Answer:

Q: H.W: The data describe the No. of doctor's work in Abn Sena hospital and the No. of Tour to their…

A: Given data is Tour No.(x) 6 8 6 11 9 2 7 5 8 Doctors No.(y) 4 5 3 6 5 4 5 2 6

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

A: The Pearson correlation coefficient used to define the relationship between two quantitative…

Q: 1.2. Calculate the correlation of coefficient (r).

A: Here, Two variables are given, X : Income per annum (in R 1000)  Y : Life Insurance (in R 1000) The…

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: A set of n=38 pairs of x and y scores has SSx=150 SSy=25 Ex=50 Ey=160 and EXY=200.What is the…

A: given data  n = 38, SSX = 150 , SSY = 25 Σx = 50 , Σy = 160, Σxy = 200 Pearson correlation is…

Q: The equation for the line of best fit for some data comparing the height of a candle (H) with time…

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Q: Campute the correlation co-efficient between the variables X and Y represented b) following table: X…

A: The formula for the calculation of correlation co-efficient is r=n∑xy−∑x⋅∑yn∑x2−∑x2×n∑y2−∑y2.

Q: e found to have a strong positive linear correlation. Pick the 0.37x + 25 D.87x + 25 7х — 25 — 25 -

A: The regression line is of the form, Y = a+ bx Here b is the slope and a is the intercept. If the…

Q: b) The manufacturer of release agent compresses liquid in a spray can and the values of pressures…

A: The Pearson's correlation coefficient between two variable X and Y is given as,

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: Consider the following regression equation: Y = 30 + 8X. If SSE = 720 and SS Total = 1,200, then the…

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Q: Find the correlation coefficient (r)? xy

A: Given data,

Q: Draw scatter diagrams for the different values of correlation co-efficient 'r' given below: (i) r =…

A: Hello. Since your question has multiple sub-parts, we will solve first three sub-parts for you. If…

Q: The equation for the line of best fit for some data comparing the height of a candle (H) with time…

A: Given that  The height of the candle with time (T) is  H=-3.2T+20 The equation is negatively…

Q: 2. Calculate the correlation coefficient between the two variables x and y shown below: X -1 1 2 4…

A: Calculate Correlation Coefficient r without cov(x,y) from the following data X Y -1 -1 1 2…

Q: 10ose the correct answer below. A. No, because if r=0, the variables are in a perfect linear…

A: Correct option is D

Q: Let the two variables X and Y have the covariance and correlation coefficient between them as 2 and…

A: Given that, X, Y are two random variables. COV(X,Y)=2 Corr(X,Y)=0.5 and VAR(X)=2×VAR(Y)

Q: W= X+ 3Y Find the (c) correlations (d) correlation coefficient of V and W

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Q: If S=234, S. XY = 244 S=255, then the value of correlation coefficient 'r' is XX YY

A: We have to find value of r.

Q: What is the r2value if the obtained correlation is r= 0.70? a.  0.049 b.  0.49 c.  1.40 d.…

A: Here we need to find the value of the coefficient of determination from the given value of…

Q: 4 Y 3 6 2 Find the correlation from the above data. CO CO CO 2.

A: Using excel:

Q: In a test of military ordnance, a large mumber of bombs were dropped on a target from various…

A: Hey there! Thank you for posting the question. Since your question has more than 3 parts, we are…

Q: There is a relation between the following variables as y = 1 / (a ​​* x ^ b) (x ^ b means x over b)…

A: The correlation coefficient(r) of x, y is given by,  Calculate the summations as follows:  x y…

Q: True or False 1. In general, E(XY) = E(X)E(Y). 2. If Covariance is zero, then the correlation…

A: Hi! Thank you for the question, As per the honour code, we are allowed to answer three subparts at a…

Q: The coefficient of correlation lies between -1 and +1. Symbolically, -1 <r<+1 or|r|s1

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Q: >

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Q: Complete the table below and use the formula to calculate the correlation coefficient r. (to three…

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Q: The table below summarizes x and y values. Find the sample correlation coefficient, rxy using the…

A: The data shows the x and y values to calculate the sample correlation coefficient.

Q: Find the correlations in the constants a, ß, y, 8, e, and § such that the equation (ax² + Cxy + ey²)…

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Q: There is a relationship between the following variables as y = 1 / (a ​​* x ^ b) (x ^ b: means x…

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Q: Which of the following correlation coefficients might lead a researcher to conclude that there is a…

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Q: Which of the following linear correlation coefficient suggest a perfect negative linear relationship…

A: The conditions for correlation: If r=-1, then the correlation between the two variables is perfectly…

Q: A set of n = 5 pairs of X and Y scores has SSX = 18, SSY  = 8, ∑​X=5, ∑​Y=15, SSCP = 3. What is the…

A: From the given information, the value of SSX is = 18, SSy is = 8 and SSCP = 3.   The formula for…

Correlation

Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.

Linear Correlation

A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related. 

Regression Analysis

Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.