The data below is 12 observations of hog heart girth (in) (x) and hog weight (lb) (y). Calculate the linear correlation coefficient, rr. Enter your answers to two decimal places. X (in) Y (lbs) 47 262 39 254 31 108 44 299 43 240 46 252 41 236 33 93 32 96 45 309 34 201 42 280
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 below is 12 observations of hog heart girth (in) (x) and hog weight (lb) (y). Calculate the
| X (in) |
Y (lbs) |
|---|---|
| 47 | 262 |
| 39 | 254 |
| 31 | 108 |
| 44 | 299 |
| 43 | 240 |
| 46 | 252 |
| 41 | 236 |
| 33 | 93 |
| 32 | 96 |
| 45 | 309 |
| 34 | 201 |
| 42 | 280 |
r = __?__
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