find the value of the linear correlation coefficient r x: 19.5, 37.9, 21.7, 40.9, 32.9 y: 8,9,7,3,10

Q: (a) Calculate correlation coefficient from the following results : N= 10, EX=140, E Y= 150 E (X –…

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Q: Match the scatter plot to one of the four correlations a. r=0.95 b. r=-0.39 c. r=-0.26 d. r=-0.89

A: From the given scattered plot we want to know that correct scattered plot with correct correlation…

Q: Determine the value that the correlation, r, could be for the following scatter plot. 8. 2. 6. 8.

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Q: Calculate correlation coefficient from the following information: N= 10, ΣX= 140, ΣΥ= 150, Σ(Χ- 10,…

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Q: (d) Determine if a linear relation exists between height and head circumference. (Note that the…

A: Given: Height Circumference  27 17.4 25.25 17.2 26.5 17.3 25.5 16.9 27.25 17.4 26.5…

Q: Find a) the mean function for {x,}. b) the variance function for {x,}. c) the covariance for {x,}.

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Q: R'is the square of the correlation, so both measure the direction of the relationship between two…

A: R-Squared is square of correlation r but they measures different things.

Q: Calculate the coefficient of correlation between x and y. 2 4 y 5 9. 13 17

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Q: The table below shows the number of absences, x, in a Calculus course and the final exam grade, y,…

A: Here, x denotes the number of absences in Calculus course, and y final grade for 7 students.…

Q: o Va B) 3) Determine which plot shows the strongest linear correlation. D) xr C) D) D 1. A) A

A: # given scatter plot between the data values x and y then which one of them show strongest linear…

Q: Find the value of the linear correlation coefficient r. 19.3 23.4 10.3 17.7 23.2 3 3 0.056 -0.236…

A: Given that    X Y X \cdot YX⋅Y X^2X2 Y^2Y2   19.3 3 57.9 372.49 9   23.4 3 70.2 547.56 9…

Q: In this scatter plot the correlation between the variables X and Y is : 10 20 30 40 50 O strong and…

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Q: Find the second order correlation coefficient r2. when r,2 12.34 = 50 r., = 40, r, = .60, r, = .70,…

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Q: The data below are the temperatures on randomly chosen days during a summer class and the number of…

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Q: Find the value of the linear correlation  coefficient r.

A: From the given information, x y x^2 y^2 xy 40 9 1600 81 360 10.5 8 110.25 64 84 34 9 1156…

Q: The data below are the temperatures on randomly chosen days during a summer class and the number of…

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Q: Find the value of partial correlations for r,, = 0.60, r = 0.80, r,3 = 0.70 12

A: We have given that  r12 = 0.60, r23 = 0.80, r13=0.70 I want to find partial correlation.

Q: find the correlation coefficient r.   x y 5 8 9 10 11 13 17 19

A: Solution: The given data is

Q: On the picture are percentages for annual sales growth and net sales attributed to loyalty card…

A: Solution: The percentages for annual sales growth and net sales attributed to loyalty card usage at…

Q: Which value of the coefficient of correlation r indicates a stronger correlation than -0.85? o a.…

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Q: The data below shows the selling price (in hundred thousands) and the list price (in hundred…

A: In this case, we need to check whether there is a linear correlation between the two variables.

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: Find (a) the correlation (b) the covariance and (c) correlation coefficient of X and Y

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Q: The data below shows the selling price​ (in hundred​ thousands) and the list price​ (in hundred​…

A: Solution : Given that, Selling Price​ (x) 400 303 376 431 458 476 317 353 417 331        List Price​…

Q: Find the value of the linear correlation coefficient r. x 47.0 466 274 332 409 10 10 10 y A) 0.156…

A: Correlation:   A statistical method that can be applied between the pairs of variables in order to…

Q: Find the correlation coefficient (r)? xy

A: Given data,

Q: Find the value of the linear correlation coefficient r. x 57 53 59 61 53 56 60 14) 14) y 156 164 163…

A: Given data, X Y X*Y X*X Y*Y 57 156 8892 3249 24336 53 164 8692 2809 26896 59 163 9617 3481…

Q: The paired data below consist of the costs of advertising (in thousands of dollars) and the number…

A: To find : Linear correlation coefficient (r) = ?

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: If Ex=12, Ɛy=42, Ex²=46, Ɛy²=542, Exy=157and n =4, find the correlation coefficient,

A: The formula of the correlation coefficient is,

Q: Which is the strongest (highest) r correlation:  -0.9000 -0.6000 -0.3000 0.4500

A: Correlation r is lies between -1 and 1. The value of r near to 1 in absolute value gives the…

Q: A mathematics teacher recorded the length of time, y minutes, taken to travel to school when leaving…

A: As per our guidelines we are suppose to answer three sub parts. X Y X*Y X*X Y*Y 0 16 0 0 256…

Q: he accompanying table shows the height​ (in inches) of 8 high school girls and their scores on an IQ…

A: Use EXCEL to obtain the value correlation coefficient r: EXCEL procedure: Go to EXCEL Go to…

Q: Use the data from the given table of values to determine the correlation. In the answer space…

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Q: Find the value of the linear correlation coefficient r for the simple random sample of paired data…

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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: Which plot indicates a correlation of 0.7? Y & R 8 50 T 10

A: Here, first figure shows negative correlation because trend line goes negative axis.

Q: e of the linear correlation coefficient r to find the coefficient of determination and the…

A: A coefficient of determination(r2) is used to measure the explained sum of squares as a proportion…

Q: b. Find the linear correlation coefficient, r. The linear correlation coefficient is r= (Round to…

A: a. The scatterplot is obtained here by using EXCEL. The software procedure is given below: In first…

Q: ow are the overhead widths (in cm) of seals measured from photographs and the weights (in kg) of the…

A: Here from the given information we find correlation coefficient and test for it.

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

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Q: Exercise 6E For each set of data: a X 10 11 12 13 14 15 16 17 18 i Plot the points on a scatter…

A: Given that  Data x and y as follows: x y 10 18 11 20 12 19 13 21 14 24 15 23 16…

Q: Find the value of the linear.correlation coefficient r using the paired data below. x 75 35 95 16 35…

A: Number of samples (n) = 7 x y x2 y2 xy 75 165 5625 27225 12375 35 146 1225 21316 5110 95…

Q: The linear correlation coefficient is r

A: The linear correlation coefficient tells the strength of the linear relationship between two…

Q: Use the equation below for calculating the correlation co-efficient, r to state when the correlation…

A: This is a problem of theoretical distribution.

Q: Let x be the average number of employees in a group health insurance plan, and let y be the average…

A: Solution: The correlation coefficient can be calculated by using the following formula: Then, the…

Q: Match the linear correlation coefficient to the scatter diagram. The scales on the x- and y-axis are…

A: scatter plot are plotted to see if the independent and the dependent variable have any relation…

Q: (i) Find the auto-correlation of Y(t).

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Q: What is the value of the correlation coefficent, r? Is the strength of the linear relationship…

A: Given that, Y = 0.205x - 336 R2 = 0.981

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.