the data on the right has an equation close to L=0.17t+73.65, where l is the life expectancy at birth (in years) of a person born t years after 1980 (see table) complete part a though d. years of birth life expectancy (years) 1980 73.6 1985 74.8 1990 75.3 1995 75.7 2000 77.1 2005 77.8 2006 78.2 a. use the linear model to predict the life expectancy of a person born in 2017. b. use the linear model to predict the birth year in which the life expectancy of a person will be 79.6years c. use the linear model to estimate what the life expectancy was at 1977 d. find the t- intercept
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 data on the right has an equation close to L=0.17t+73.65, where l is the life expectancy at birth (in years) of a person born t years after 1980 (see table) complete part a though d.
years of birth life expectancy (years)
1980 73.6
1985 74.8
1990 75.3
1995 75.7
2000 77.1
2005 77.8
2006 78.2
a. use the linear model to predict the life expectancy of a person born in 2017.
b. use the linear model to predict the birth year in which the life expectancy of a person will be 79.6years
c. use the linear model to estimate what the life expectancy was at 1977
d. find the t- intercept
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