Trevor conducted a study and found that the correlation between the price of a gallon of gasoline and gasoline consumption has a linear correlation coefficient of – 0.7. What is the strength and direction of the correlation between price of gasoline and consumption? What does this result say about the relationship between price of gasoline and consumption? Do people who spend more time on social networking sites spend more time using Twitter? Berta conducted a study and found that the correlation between the times spent on the two activities was 0.8. What is the strength and direction of the correlation? What does this result say about the relationship between times spent on the two activities? The local ice cream shop keeps track of how much ice cream they sell versus the temperature on that day and found that the correlation is 0.96. What is the strength and direction of the correlation between ice cream sales and daily temperature? What does this result say about the relationship?
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.
- Trevor conducted a study and found that the
correlation between the price of a gallon of gasoline and gasoline consumption has a linearcorrelation coefficient of – 0.7. What is the strength and direction of the correlation between price of gasoline and consumption? What does this result say about the relationship between price of gasoline and consumption? - Do people who spend more time on social networking sites spend more time using Twitter? Berta conducted a study and found that the correlation between the times spent on the two activities was 0.8. What is the strength and direction of the correlation? What does this result say about the relationship between times spent on the two activities?
- The local ice cream shop keeps track of how much ice cream they sell versus the temperature on that day and found that the correlation is 0.96. What is the strength and direction of the correlation between ice cream sales and daily temperature? What does this result say about the relationship?
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