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5.05 Correlation coefficient

Interactive practice questions

A correlation coefficient of $1$1 indicates

A perfect positive correlation

A

A perfect negative correlation

B

No relationship

C
Easy
< 1min

A correlation coefficient of $0$0 indicates

Easy
< 1min

A correlation coefficient of $-1$1 indicates:

Easy
< 1min

A pair of data sets have a correlation coefficient of $\frac{1}{10}$110 while a second pair of data sets have a correlation coefficient of $\frac{3}{5}$35.

Easy
< 1min
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Outcomes

4.1.2.2

describe the association between two numerical variables in terms of direction (positive/negative), form (linear/non-linear) and strength (strong/moderate/weak)

4.1.3.5

use technology to find the correlation coefficient (an indicator of the strength of linear association) [complex]

4.1.3.8

distinguish between causality and correlation through examples [complex]

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