Regression analysis for age and blood

Reference no: EM1396738

1. A study was conducted to investigate the relationship between age (in years) and BAC (blood alcohol concentration) measured when convicted DWI (driving while intoxicated) jail inmates were first arrested. Sample data are given below for randomly selected subjects.

Age 17.2 43.5 30.7 53.1 37.2 21.0 27.6 46.3

BAC 0.19 0.20 0.26 0.16 0.24 0.20 0.18 0.23

a. Police want to predict BAC based on age at first arrest. Which variable is the dependent variable? Which variable is the independent variable?

b. Draw and interpret the information contained in a scatter diagram.

c. Determine the coefficient of correlation.

d. Interpret the relationship between BAC and age using the correlation coefficient.

e. Determine the coefficient of determination. Interpret.

Reference no: EM1396738

Questions Cloud

Regression analysis for baseball data : Develop a linear regression model for these data and forecast the occupancy rate for next year if the Blue Sox win 88 games.

Multiple choice questions - population genetics : Which of the following should NOT be expected to cause a change in the frequencies of alleles in a population?

Questions based on economic theory : Represent this economy using the AD/AS model and explain the model and what problem will occur in the economy if no fiscal policy is pursued? What fiscal policy tools could be used to combat the problem? ECOM4000

Illustrate what you consider as the key or contentious issue : You have been told by your boss who your merit salary increase for next year will be 5 per cent of your base salary. You believe you deserve more. Illustrate what you consider as the key or contentious issue also explain why

Regression analysis for age and blood : Determine the coefficient of correlation. Interpret the relationship between BAC and age using the correlation coefficient. Determine the coefficient of determination. Interpret.

Problem related to pearson correlation : If the Pearson Correlation is 0.18, what do we get, what is the value called, and what does it tell us?

Discuss the type of infectious process : While you are working in your garden, a tine of the pitchfork accidentally produces a deep puncture wound in the calf of your leg.

Illustrate what are three attitudes some leaders have : Illustrate what are three attitudes some leaders have about others which lead them treating others, in Victor Frankl's words "as they are", also illustrate what is the result?

Regression analysis of depression data : A University Counseling Clinic is interested in predicting the levels of depression from the number of social events attended per week by a sample of their clients. The data are below:

User Account

All Pages