For Discussion #3, find an example of each of the following and cite your source. two variables with a positive correlation two variables with a negative correlation

Q: .    Explain in detail what is meant by correlation.   a.    Give three examples of a positive…

A: Correlation is defined as the degree or amount of association between two variables, or samples, say…

Q: correlation

A: The given data was collected from October 2018-September 2019 when I lived in Clemson, SC. I am…

Q: Explain in detail what is meant by correlation. a.    Give three examples of a positive correlation…

A: Note Part b and c is answered along with a Correlation is a measure of linear association between…

Q: Part 6- Directions- Below is the data for the number of days students attend school and their test…

A: Given Information: The data represents the number of days students attend school and their test…

Q: An employee of an auction house has a list of 25 recently sold paintings. Eight artists were…

A: Solution

Q: Fast food is often considered unhealthy because much of it is high in both fat and calories. But are…

A: Given, The values of Fat and Calories, On the basis of these, the correlation coefficient is

Q: Determine from your graph if the data shows a correlation. What would you expect the correlation…

A: Correlation: Correlation analysis is used to measure the strength of the association between…

Q: Based on your scatter diagram, you would expect the correlation to be The mean x score is Mx = , and…

A: The table shows X and Y variables.

Q: suppose you are given the four correlation coefficient values below. Determine which one represents…

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Q: A random sample of college students was surveyed about how they spend their time each week.  The…

A: Given  correlation=r=-0.63  Given predicted value spent watching TV=0.23

Q: The data in the accompanying table represent the annual rates of return for various stocks. If you…

A: Correlation coefficient is a method to assess the strength of the relationship between 2 variable.

Q: Which of the following statements regarding the coefficient of correlation is fal O It describes the…

A: question 17: Correlation coefficient: Correlation coefficient measures the linear relationship…

Q: You collect data on college professors to assess whether there is a correlation between their self-…

A: Given information: The scatterplot for the variables X = Number of classes taught online and Y = Job…

Q: Identify the type of correlation from the graph. 12- 10 0 . 2 6 Positive correlation Negative…

A: Solution-: We identify the type of correlation from the given graph:

Q: For the example below, what type of correlation would you expect? Degrees of an oven and cooking…

A: Given that ; For the example below, what type of correlation would you expect? Degrees of an oven…

Q: For each pair of quantities, decide if the correlation coefficient would be dose to 1, dose to -1,…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: type of correlation

A: We have to find out the type of correlation.

Q: If the correlation coefficient between two variables is r = .86, we can interpret which of the…

A: The types of correlation are:   Positive correlation: That is, as one of the variable increases…

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

A: (a) The correlation coefficient r=-0.969: The correlation coefficient r=-0.969 is matched to scatter…

Q: f we find that there is a linear correlation between the concentration of carbon dioxide in our…

A: Correlation means a mutual relationship or connection between two or more things.in statistics,…

Q: Given the following data, do the tasks stated below. a) Identify the independent variable and the…

A: Hey, since there are multiple subparts posted, we will answer first three subparts. If you want any…

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

A:

Q: State whether the following statement is true or false: “The correlation between shoe size and…

A: Correlation measures the strength of association.  According to the provided information, the…

Q: The slope b and the correlation r always have the same sign. For example, if the correlation is…

A: Given: Statement: sign of slope and correlation always have the same sign.

Q: The variables on a date base have a strong correlation.  What of the following correlations…

A: The relationship between two variables is generally considered strong when their r value is larger…

Q: Erica is an inventor. Her portfolio tacks the performance of Google and wants to add the stock of…

A: Let the random variables, X and Y represent the Google data and Apple data, respectively. The…

Q: When the change in a variable 'x' directly causes the change in another variable 'y' that is an…

A: Here the variable x directly causes the change in another variable y.

Q: A random sample of college students was surveyed about how they spend their time each week.  The…

A: Correlation is a useful association statistic.

Q: . Use the graph below to answer the following questions: а. What type of correlation does the data…

A: A perfect positive linear relationship is shown by the a straight line moving upwards to the right.…

Q: The following graph plots data for tax per gallon and internal miles. Carefully explain what the…

A: The graph is a scatter plot which is normally used to observe and visually display the relationship…

Q: For each of the following pairs of variables, indicate whether you would expect a positive…

A: The correlation coefficient is a measure of how well two quantitative variables are related…

Q: Vill the following variables have positive correlation, negative correlation, or no correlation? IQ…

A: Solution: Correlation:  Two variables are said to be correlated if the change in the value of one…

Q: Indicate which correlation coefficient represents a stronger relation between two variables A) -.85…

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

Q: . If the points on the scatter graph follow a trend of rising from right to left, how will you…

A: Note : As per answering guidelines I have to only one question in case of multiple different…

Q: The data in the accompanying table represent the annual rates of return for various stocks. If you…

A: Solution: Part a) The annual rates of return for 3 stocks namely, A, B and C are given.  You are…

Q: Which of the following sets of correlations shows the highest to lowest degree of relationship? A.…

A: Correlation:   It is a statistical method that can be applied between the pairs of variables in…

Q: when r=-0.9 it mean strong negative correlation True False

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Q: A random sample of college students was surveyed about how they spend their time each week.  The…

A: Given : Reg eq. : Predicted hrs spent watching TV = 17.21 - 0.23 ( hrs spent working ) r = -0.63

Q: Determine if correlation between the two given variables is likely to be positive or negative, or if…

A: This question is based on correlation concept. Daily calorie intake and weight are positively…

Q: Given the graph below, what type of correlation would you predict there is between the variables?…

A: Solution: The scatter plot is a type of graphical tools used to identifying the correlations between…

Q: You generate a scatter plot using excel. Excel plot the trend line and report the equation…

A: GivenRegression equation is y=-49.78x+24.08coefficient of determination(r2)=0.3969

Q: Which of the following are attributes of correlation? Ocorrelation is bounded by +1 and -1…

A: Correlation: Correlation measure the relationship between the two variables. Whether it is positive…

Q: Consider below the correlation between the test result in the First attempt and the Second attempt.…

A: In the given information, the scatter plot of Number of hours of sleep versus Minimum to complete…

Q: Use the output below to test to see if there is a significant negative linear relation between…

A: Solution: 14.1 14. State the hypotheses. Null hypothesis: H0: There is no significant negative…

Q: For the following correlations write if they are positive or negative. Please only write either…

A: If higher number of absences makes the grades lower, it indicates a negative correlation. Since…

Q: The correlation coefficient for a set of 35 ordered pairs (x, y) is -0.968 where x= average number…

A: We have given correlation coefficient between protein consumption and body fat.by looking at value…

Q: Which of the following correlations indicates the strongest relationship or association and why? r…

A: The correlation is a linear relationship between two variables. It ranges from -1 to 1. it is…

Q: Write down the properties of R2 . If R2=35.7%, interpret your data. Distinguish between the…

A: Solution : 1. Properties of R2 : i) R2 = 1-RSSTSS where, RSS = Residual sum of square…

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.