Compute the correlation coefficien x16 52 3 y1 365 4

Q: Describe an example in which two variables are strongly correlated, but changes in one do not cause…

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Q: Arianna gathered data about the distance of 20 cities from the equator and the average hours of…

A: In this question, we need to find the type of correlation.

Q: Imagine a researcher found a positive correlation between two variables and reported that the r…

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Q: Consider this set of bivariate data: (10, 23), (30, 85), and (40, 96).  Calculate the covariance.

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Q: There are two risky shares, where you have calculated the means, and the correlation coefficient of…

A: There are two risky shares, where you have calculated the means, and the correlation coefficient of…

Q: initial ideas about Correlation

A: Correlation refers to the relationship between two variables.

Q: Express the null hypothesis and the alternative hypothesis in symbolic form for a test to support…

A: Given claim: Carter Motor Company claims that its new sedan, the Libra, will average better than 23…

Q: Give examples of 2 variables that are positively correlated and two that are negatively correlated.

A: We need to use the concept of Positive and Negative correlation.

Q: riance and correlation matric

A: s no X1 X2 X3 X4 1 48 7.2 4.9 495 2 40 7.4 5 524 3 41 7.7 5.3 461 4 52 7.1 4.8 552 5 41…

Q: Give examples of two variables that have a perfect positive linear correlation and two variables…

A: We know that Perfect positive linear correlation: When correlation coefficient value is +1 then the…

Q: A pair of variables, x and y, have a correlation coefficient of -0.7. How much of the variation in y…

A: Given  r=-0.7

Q: If the relationship of the variables is as: increasing of one variable decreases the other and they…

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

Q: Explain what a correlation coefficient (r-value) is and how we can use it to help us interpret a…

A: The correlation coefficient, often denoted as 'r', is a statistical measure that calculates the…

Q: negative linear correlation, the slope of the least-squares line is negative

A: The general form of the regression line is: Y^=a+bXY Where Y^ is the predicted value, 'a' is the…

Q: What will be the mathematical and statistical model/ equation when

A: Here given , X is the dependent variable, and   Y is the independent variable

Q: Briefly explain what it means by "High correlation does not imply causality." Give an example of two…

A: INTRODUCTION :  CORRELATION:  let X and Y are two quantitative variables. The correlation…

Q: Find the equation of the least-squares line. (Round your values to four decimal places.) Use the…

A: Given data, X Y X*Y X*X 2 91 182 4 6 46 276 36 7 32 224 49 9 6 54 81 12 4 48 144

Q: The table shows data collected on the relationship between the average number of minutes spent…

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Q: Interpret the coefficient of correlation “r” in your word

A: The coefficient of correlation is a unitless measure of the strength of the linear relationship…

Q: The correlation coefficient may assume any value between ?

A: The correlation coefficient between the two variables gives the linear relationship between the two.…

Q: The Linear correlation coefficient r is the slope of the line. False True

A: statement : The Linear correlation coefficient r is the slope of the line.  we have to identify the…

Q: Find the correlation coefficient.

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Q: Where does the spurious correlation exist?

A: In day-to-day life, we may all come across some situation where 2 factors are related. For example…

Q: What is the formula for calculating the covariance between two variables X and Y?

A: Given that The covariance between two variables X and Y.

Q: An environmentalist wants to determine the relationships between the numbers (in thousands) of…

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

Q: Find the means of X and Y variables and the coefficient of correlation between them from the ff two…

A: Find the means of X and Y variables and the coefficient of correlation between them from the ff two…

Q: Suppose a positive linear correlation is found between two quantities. Does this mean that one of…

A: The positive correlation is a relationship between two variables in which both variables move in…

Q: The command aov(x,y) can be used to calculate the correlation coefficient between x and y O True O…

A: aov(x, y) is used to find correlation between x and y  True  False

Q: Compute the value of correlation coefficient of using data in table 1 for the number of hrs. a…

A: Solution : To find the correlation coefficient  Sr. No. xi yi xi2 yi2 xiyi 1 30 2 900 2 60 2…

Q: Solve the problem. A olothes shop owner tries to predict the winter oolection sales by displaying…

A: The value of correlation for the variables coat sales and temperature is -0.801. The variable…

Q: The correlation coefficient ranges from which two values?

A: The correlation coefficient ranges from which two values

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.