A teacher wants to know if the number of hours spent in studying is correlated with the score obtained in an examination. The following table shows the number of hours spent in studying scores obtained by six students. Compute the correlation coefficient. STUDENT No. of Hours Spent in Score in the Studving(X) Exam(Y)

Q: For a group of graduating college seniors, a researcher records each student’s rank in his/her high…

A: The given data is ranked data.

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A: The value of r would not change.

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

A: Correlation: Correlation a measure which indicates the “go-togetherness” of two data sets. It can be…

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A: GivenX represent the number of heads in first toss.So X can take values {0,1} Y represents the…

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A: Given data: P-value = 0.032 = 3.2%

Q: The co-efficient of rank correlation of marks obtained by 10 students in statistics and accountancy…

A: Answer:

Q: For a data set of weights (pounds) and highway fuel consumption amounts (mpg) of four types of…

A:

Q: When interpreting a correlation coefficient of -0.92, you would say that there is a O strong…

A: The strength and direction of linear relationship between two variables is measured by correlation,…

Q: A fair coin is tossed three times (consecutively). If X is the number of heads of the first shot and…

A: It is an important part of statistics . It is widely used .

Q: When do the convolution and the correlation of two signals produce identical results and why?

A: Convolution is a mathematical way of combining two signals to form a third signal. It is the single…

Q: Suppose the correlation value between two variables is calculated to be 0.818. How would you…

A: Concept: Correlation can be defined as the linear relationship between the two quantitative…

Q: Suppose that, for a sample of pairs of observations from two variables, the linear correlation…

A:

Q: Suppose the correlation coefficient between the number of professional sports teams in a city and…

A: Let the number of hospitals be x and the number of sports team be y Therefore- x=0.72y Now for y=1,…

Q: If the coefficient of correlation between two variables is -0.6, What is the coefficient of…

A:

Q: For a data set of weights (pounds) and highway fuel consumption amounts (mpg) of five types of…

A: Given information- We have given the data set of weights (pounds) and highway fuel consumption…

Q: For a data set of weights (pounds) and highway fuel consumption amounts (mpg) of five types of…

A: For testing the correlation coefficient significance, the p-value is 0.027  we know the p-value is…

Q: To study the correlation between the weights and heights of the students of a college, a sample of…

A:

Q: Suppose that, for a sample of pairs of observations from two variables, the linear correlation…

A: Correlation: Correlation a measure which indicates the “go-togetherness” of two data sets. It can be…

Q: Imagine that someone in campus life wants to convert the “Studying” scale so it’s expressed as the…

A: The data table given is:

Q: There is a [a] correlation between the amount of salary and efficiency ratings – that means, an…

A: Here Given  A manager of a company wants to study the correlation between the amount of salary and…

Q: The ages​ (in years) of 10 men and their systolic blood pressures​ (in millimeters of​ mercury) are…

A:

Q: Suppose that grades on a midterm and a final exam have a correlation coefficient of 0.5, and both…

A: The least square equation for the predicting grades of final exam on the basis of the grades of the…

Q: Suppose it was observed that there is a correlation of r= -0.81 between a driver's age and the cost…

A: Since we know that negative correlation is defined as relationship between two variables in which if…

Q: For a data set of weights (pounds) and highway fuel consumption amounts (mpg) of four types of…

A: The hypothesis is, Null hypothesis: There is no linear correlation between the two variables.…

Q: What is the correlation between x

A:

Q: The researchers reported:   Consumer masculinity was strongly correlated with appearance-related…

A: Given that, Self-esteem =(r = 0.40, p < .001)  Media influence= (r = 0.62, p < .001)  overall…

Q: Choose the most appropriate completion of the sentence. In order to indicate a strong negative…

A: The correlation coefficient between two variables is defined as the measure of degree of…

Q: A traffic officer is compiling information about the relationship between the hour of the day and…

A: correlation coefficient of -0.25.

Q: If correlations under .35 are considered unacceptable, would you have any reservations about using…

A: It is an important part of statistics. It is widely used.

Q: In order to indicate a strong negative correlation between variables, the correlation coefficient…

A: Definition used -                 Negative correlation -                             From the…

Q: In the table below are the scores of the students in General Mathematics and Physics. Calculate the…

A:

Q: Show that correlation coefficient lies between 1 and -1.

A: 6:we have to show that correlation coefficient is lies between 1 and -1correlation coefficent is…

Q: If the linear correlation coefficient is -0.654, what is the value of the coefficient of…

A: Coefficient of Determination: It is denoted by r2, here r represents the correlation between the two…

Q: To study the correlation between the weights and heights of the students of a college, a sample of…

A:

Q: The symbol that is used for the linear correlation coefficient is _______.

A:

Q: For a data set of weights (pounds) and highway fuel consumption amounts (mpg) of six types of…

A: Given information P-value = 0.037

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: If r= +1, the correlation is said to be a O Perfect negative correlation O Perfect positive…

A:

Q: If someone owns an electric car it is represented by a one  and if they don’t it is represented by a…

A: Given:   Number of cars (y) Salary (x) xy y^2 x^2   0 80000 0 0 6400000000   0 17000 0 0…

Q: In order to indicate a strong correlation between variables, the correlation coefficient will be O…

A: In order to indicate a strong correlation between, the correlation coefficient will be

Q: For a data set of weights (pounds) and highway fuel consumption amounts (mpg) of seven types of…

A: Given: The data set of weights in pounds and highway fuel consumption in mpg of seven types of…

Q: if the slope is negative then is the correlation coefficient also negative?

A: Given: the slope of the regression line is -ve then the correlation coefficient is -ve.

Q: The store manager of a business that sells jackets is curious if the weather temperature (in degrees…

A: Result: i) Correlation coefficient between temperature and sales is -0.6362 ii)Yes, Weather…

Q: In running a regression of the retunrs of stock XYZ against the returns on the market, the Std for…

A: Given that Standard deviation for the returns of stock XYZ is 20% and that of the market returns is…

Q: A computer while calculating the correlation coefficient between the variables X and Y obtained the…

A:

Q: A nutritionist collects data from 25 popular breakfast cereals. For each cereal, the nurmnber of…

A: Given Information:  r = 0.83  x = the number of calories y = the number of miligrams of sodium on y…

Q: A nutritionist collects data from 25 popular breakfast cereals. For each cereal, the number of…

A: Correlation: Correlation determines the size and direction of the relationship between the two…

Q: The following table shows the marks obtained by 10 students of a college in Accountancy (X) and…

A: Correlation: Correlation a measure which indicates the “go-togetherness” of two data sets. It can be…

Q: correlation coefficient is said to be 0.95 would this be co

A: Correlation is defined as the linear relationship between the two variables. The range of the…