Life expectancy at age 65: By using the Social Security Administration data for selected year from 1950 and projected to 2050, the additional years of life expectancy at age 65 can be described as function f(x) = 0.077x + 13.8 where x equals the number of years past 1950. To what calendar year does x=70 correspond? What is the predicted additional years of life expectancy for someone who will reach age 65 in the year 2045? In what year does the function predict the life expectancy to be 20 years after age 65?
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 age 65: By using the Social Security Administration data for selected year from 1950 and projected to 2050, the additional years of life expectancy at age 65 can be described as function f(x) = 0.077x + 13.8 where x equals the number of years past 1950. To what calendar year does x=70 correspond? What is the predicted additional years of life expectancy for someone who will reach age 65 in the year 2045? In what year does the function predict the life expectancy to be 20 years after age 65?
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