Correlations Flashcards

1
Q

Correlation

A

An association between two variables called co-variables

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2
Q

Correlation coefficient

A

Number between -1 and +1 that represents the direction and strength of a relationship between co-variable

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3
Q

Positive Correlation

A

As one co-variable increases so does the other

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4
Q

Negative Correlation

A

Asone co-variable increases the other decreases

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5
Q

Zero correlation

A

There is no relationship between the co-variables

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6
Q

How is a correlation different to a experiment

A

An experiment manipulates the IV and to see the effects on the DV, whereas a correlation doesn’t have IV and DVs

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7
Q

When can correlations be used in stats testing

A

Spearman rho
Pearson’s rho

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8
Q

What is the correlation coefficient for a perfect positive correlation

A

1

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9
Q

What is the correlation coefficient for a high positive correlation

A

0.9

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10
Q

What is the correlation coefficient for a low positive correlation

A

0.5

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11
Q

What is the correlation coefficient for No correlation

A

0

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12
Q

What is the correlation coefficient for a low negative correlation

A

-0.5

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13
Q

What is the correlation coefficient for a high negative correlation

A

-0.9

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14
Q

What is the correlation coefficient for a perfect negative correlation

A

-1

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