Stopping Distances for Trucks at Selected Speeds | Dry Pavement Wet Pavement 700 665 600 F 525 490 500 390 400 350 280 300 230 190 200 gular Sni 100 35 45 55 65 Speed (miles per hour) Stopping Distance (feet)
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.
The graph shows stopping distances for trucks at various speeds on dry roads and on wet roads.
a. Use the statistical menu of your graphing utility and the quadratic regression program to obtain the quadratic
place.
b. Use the function from part (a) to determine speeds on dry pavement requiring stopping distances that exceed 455 feet. Round to the nearest mile per hour.
Trending now
This is a popular solution!
Step by step
Solved in 2 steps with 1 images
