The number of TV sets in the UK and my age.
Height and Weight.
No, they do not.
If two variables are highly correlated, the Pearson correlation will be close to -1.0 or +1.0. A correlation of zero shows no relationship.
1 or -1
The number of times a pencil is sharpened and its length
co-related to or co- related with
Those are called outliers, in the data, they are bythemselves
Correlation is defined as the degree of relationship between two or more variables. It is also called the simple correlation. The degree of relationship between two or more variables is called multi correlation. when two or more variables are said to be higjly correlated it means that they have a strong relationship such that a given rise or fall in one variable will lead to a direct change in the other variable or variables. good examples of highly correlated variables are price and quantity, wage rate and out put, tax and income.
Analyzing the relationship between variables in graphs of x vs y or y vs x can provide insights into the nature of their relationship. By examining the direction, shape, and strength of the relationship, one can determine if the variables are positively correlated, negatively correlated, or not correlated at all. This analysis can help identify patterns, trends, and potential causal relationships between the variables.
3.3200000000000003
false they can be related with quadratic equation as well
to convert raw data of correlated variables to data matrix of uncorrelated variables (Principal Component)