What is the example of Pearson correlation coefficient and what is the functions

vazelinahS

vazelinahS

Answered question

2021-10-17

What is the example of Pearson correlation coefficient and what is the functions?

Answer & Explanation

Clelioo

Clelioo

Skilled2021-10-18Added 88 answers

Step 1
Correlation between sets of data is a measure of how well they are related. The most common measure of correlation in stats is the Pearson Correlation. The full name is the Pearson Product Moment Correlation (PPMC). It shows the linear relationship between two sets of data. In simple terms, it answers the question, Can I draw a line graph to represent the data? Two letters are used to represent the Pearson correlation: Greek letter rho (ρ) for a population and the letter “r” for a sample.
Formula for Pearson correlation coefficient is,
r=σxyσxσy
Step 2
Example:
scientists in China wanted to know if there was a relationship between how weedy rice populations are different genetically. The goal was to find out the evolutionary potential of the rice. Pearson’s correlation between the two groups was analyzed. It showed a positive Pearson Product Moment correlation of between 0.783 and 0.895 for weedy rice populations. This figure is quite high, which suggested a fairly strong relationship.
Pearson's correlation coefficient is the test statistics that measures the statistical relationship, or association, between two continuous variables. It is known as the best method of measuring the association between variables of interest because it is based on the method of covariance.

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