Select the most appropriate response. A store manager conducted an experiment in which he systematically varied the width of a display for toothpaste from 3 ft. to 6 ft. and recorded the corresponding number of tubes of toothpaste sold per day. The data was used to build a regression line, which was: tubes sold per day = 20 + 10(display width) What is the predicted number of tubes sold per day for a display width of 12 feet? Select the most appropriate response. A store manager conducted an experiment in which he systematically varied the width of a display for toothpaste from 3 ft. to 6 ft. and recorded the corresponding number of tubes of toothpaste sold per day. The data was used to build a regression line, which was: tubes sold per day = 20 + 10(display width) What is the predicted number of tubes sold per day for a display width of 12 feet? 120 140 It would be unwise to use the regression line to make a prediction for a display width of 12 ft.
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.
Select the most appropriate response.
A store manager conducted an experiment in which he systematically varied the width of a display for toothpaste from 3 ft. to 6 ft. and recorded the corresponding number of tubes of toothpaste sold per day. The data was used to build a regression line, which was:
tubes sold per day = 20 + 10(display width)
What is the predicted number of tubes sold per day for a display width of 12 feet?
Select the most appropriate response.
A store manager conducted an experiment in which he systematically varied the width of a display for toothpaste from 3 ft. to 6 ft. and recorded the corresponding number of tubes of toothpaste sold per day. The data was used to build a regression line, which was:
tubes sold per day = 20 + 10(display width)
What is the predicted number of tubes sold per day for a display width of 12 feet?
120
140
It would be unwise to use the regression line to make a prediction for a display width of 12 ft.
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