Question

Draw scatter plots showing different types of perfect correlations.

Answer 1

1. Perfect Positive Correlation: If all points lie on a rising straight line the correlation is perfectly positive and r=+1

2. Perfect Negative Correlation: If all points lie on a falling straight line the correlation is perfectly negative and r = -1

3. High degree of Positive Correlation:
If the points lie in a narrow strip rising upwards, the correlation is high degree of positive.

4. High degree of Negative Correlation:
If the points lie in a narrow strip falling downwards, the correlation is high degree of negative.

5. Low degree of Positive Correlation:
If the point are spread widely over a broad strip rising upwards, the correlation is low degree positive.

6. Low degree of Negative Correlation:
If the points are spread widely over a broad strip falling downwards, the correlation is low degree negative.