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# PPT - Karl Pearson's Coefficient of Correlation B Com Notes | EduRev

## B Com : PPT - Karl Pearson's Coefficient of Correlation B Com Notes | EduRev

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CORRELATION – KARL PEARSON’S
COEFFICIENT OF CORRELATION-
INTERPRETATION OF CORRELATION
COEFFICIENT
Page 3

CORRELATION – KARL PEARSON’S
COEFFICIENT OF CORRELATION-
INTERPRETATION OF CORRELATION
COEFFICIENT
MEANING OF CORRELATION
• The method of correlation is developed by
Francis Galton in 1885.
• It is the relationship between two sets of scores
or variables.
• Whenever two variables of the same group are so
related that the increase or decrease are
correspond to the increase or decrease to
another or conversely , increase or decrease
corresponds to the decrease or increase to
another ,they are said to be correlated.
Page 4

CORRELATION – KARL PEARSON’S
COEFFICIENT OF CORRELATION-
INTERPRETATION OF CORRELATION
COEFFICIENT
MEANING OF CORRELATION
• The method of correlation is developed by
Francis Galton in 1885.
• It is the relationship between two sets of scores
or variables.
• Whenever two variables of the same group are so
related that the increase or decrease are
correspond to the increase or decrease to
another or conversely , increase or decrease
corresponds to the decrease or increase to
another ,they are said to be correlated.
TYPES OF CORRELATION
On the basis of direction of the relation
between variables, there are three types of
correlation. That are ,
1. Positive Correlation
2. Negative Correlation
3. Zero Correlation
Page 5

CORRELATION – KARL PEARSON’S
COEFFICIENT OF CORRELATION-
INTERPRETATION OF CORRELATION
COEFFICIENT
MEANING OF CORRELATION
• The method of correlation is developed by
Francis Galton in 1885.
• It is the relationship between two sets of scores
or variables.
• Whenever two variables of the same group are so
related that the increase or decrease are
correspond to the increase or decrease to
another or conversely , increase or decrease
corresponds to the decrease or increase to
another ,they are said to be correlated.
TYPES OF CORRELATION
On the basis of direction of the relation
between variables, there are three types of
correlation. That are ,
1. Positive Correlation
2. Negative Correlation
3. Zero Correlation
POSITIVE CORRELATION
If when the first variable increases or
decreases the other also increases or
decreases respectively their relationship is
said to be Positive correlation , because they
move in the same direction.
Eg. Intelligence and Achievement
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