Life expectancy at birth is the estimated lifespan of a baby born in a particular year given the conditions of that time period. The regression line is y=0.205x-336, where x=birth year and y=US life male expectancy in years. The value of r2 is 0.981 a. use the regression line to estimate the US life expetancy of a male baby born in 1990, to the nearest tenth of a year. b. use the regression line to predict the US life expectancy of a male baby born in 2014, to the nearest tenth of a year. c. what is the slope regression line and what are the units of measurement?
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.
Life expectancy at birth is the estimated lifespan of a baby born in a particular year given the conditions of that time period. The regression line is y=0.205x-336, where x=birth year and y=US life male expectancy in years. The value of r2 is 0.981
a. use the regression line to estimate the US life expetancy of a male baby born in 1990, to the nearest tenth of a year.
b. use the regression line to predict the US life expectancy of a male baby born in 2014, to the nearest tenth of a year.
c. what is the slope regression line and what are the units of measurement?
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