In a study on speed control, it was found that the main reasons for regulations were to make traffic flow more efficient and to minimize the risk of danger. An area that was focused on in the study was the distance required to completely stop a vehicle at various speeds . Use the following table to answer the questions. MPH Braking Distance 20 20 30 45 40 81 50 133 60 205 80 411 Assume MPH is going to be used to predict stopping distance. Which of the two variables in the independent variable? Which is the dependent variable? What type of variable is the dependent variable What type of variable is the independent variable? Construct a scatter plot IS there a relationship between the two variables? a) Positive b) Negative
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.
In a study on speed control, it was found that the main reasons for regulations were to make traffic flow more efficient and to minimize the risk of danger. An area that was focused on in the study was the distance required to completely stop a vehicle at various speeds . Use the following table to answer the questions.
MPH Braking Distance
20 20
30 45
40 81
50 133
60 205
80 411
Assume MPH is going to be used to predict stopping distance.
- Which of the two variables in the independent variable?
- Which is the dependent variable?
- What type of variable is the dependent variable
- What type of variable is the independent variable?
- Construct a
scatter plot - IS there a relationship between the two variables? a) Positive b) Negative
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