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Types of correlation

Types of correlation. Correlation. Correlation is an average relationship between two or more variables. . Negative Correlation. Let’s see an example: What happens to the hair when a man gets older?. Negative correlation. 100. 75. Hair on head. 50. 25. 20. 40. 60. 80. Age of man.

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Types of correlation

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  1. Types of correlation

  2. Correlation Correlation is an average relationship between two or more variables. 

  3. Negative Correlation Let’s see an example: What happens to the hair when a man gets older? Negative correlation 100 75 Hair on head 50 25 20 40 60 80 Age of man

  4. As we can see that the number of hair on head goes down with an increase in age. So.. Negative correlation will be: • When the two variables move in the opposite direction. • When an increase in the value of one variable causes decrease in the value of another variable and vice- versa.

  5. Positive Correlation Monika collected data on the ages and heights of sixth, seventh and eighth grade students of her school. If she plots the data on scatter plot. What relation will she most likely to see between height and age ? • Negative correlation • Positive correlation • C. No correlation • D. Constant correlation

  6. Positive Correlation Positive correlation Children grow taller between the age 11 to 14 years. Heights of students Age of students

  7. Correlation Consternation Positive Correlation Negative Correlation Inputs and outputs are going in opposite directions Both inputs and outputs are increasing Y- X+ Y+ X+

  8. When the two variables change in equal proportion and move in opposite directions. When the two variables change in equal proportion and move in the same direction.

  9. No Correlation No pattern = No correlation 35 There is no relation between income and height of a person. 25 Income (in thousands) 20 15 70 40 50 60 80 Height (inches)

  10. Positive Correlation Negative Correlation -1 Correlation (R) +1 Perfect Negative Correlation Perfect positive Correlation Zero or No Correlation

  11. Types of Correlation Y Positive correlation No correlation Negative correlation O X

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