4. A study was conducted to see if there was a linear relationship between the length in cm of seals in overhead photographs and their weight in kilograms. Below is the data: Overhead 7.2 7.4 9.8 9.4 8.8 8.4 7.6 length Weight 116 154 250 200 197 194 170 a. If the length of a seal was 8.2 cm, what is its weight? b. Can you calculate the weight of a seal if it is 20 cm long?
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.
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