Atli believes that there is a linear relationship between the temperature in Reykjavík and the sale of mittens in his shop. He signs down the temperature in Reykjavík 7 random days and bears It compares with total sales of mittens (in krónur) the same day. The temperature measured to Average 4 degrees the days of Atli measured, with the standard deviation 3 degrees. The total wettlement sales turned out on average 28400 krónur with the standard deviation of ISK 4920. The correlation Between the mitty sales and temperature measured -0.68. Atli uses the smallest squares method to evaluate the regression line for the relationship. What is the value of the slope? 2 0 -1115.2 -235.7 Each is the value of the intersection point in his Atli´s model 32860.8 23939.2 295.4 235.7 How much variability in the short distance can be traced to the temperature outside? About -68% About 68% About 46% It cannot be assessed based on the given information.
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.
Atli believes that there is a linear relationship between the temperature in Reykjavík and the sale of mittens in his shop. He signs down the temperature in Reykjavík 7 random days and bears It compares with total sales of mittens (in krónur) the same day. The temperature measured to Average 4 degrees the days of Atli measured, with the standard deviation 3 degrees. The total wettlement sales turned out on average 28400 krónur with the standard deviation of ISK 4920. The
Between the mitty sales and temperature measured -0.68.
Atli uses the smallest squares method to evaluate the regression line for the relationship.
What is the value of the slope?
- 2
- 0
- -1115.2
- -235.7
Each is the value of the intersection point in his Atli´s model
- 32860.8
- 23939.2
- 295.4
- 235.7
How much variability in the short distance can be traced to the temperature outside?
- About -68%
- About 68%
- About 46%
- It cannot be assessed based on the given information.
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