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

Outcomes

3.1.2.2

understand an association between two numerical variables in terms of direction (positive/negative), form (linear) and strength (strong/moderate/weak)

3.1.3.2

use a scatterplot to identify the nature of the relationship between variables

3.1.4.1

recognise that an observed association between two variables does not necessarily mean that there is a causal relationship between them

3.1.4.2

identify and communicate possible non-causal explanations for an association, including coincidence and confounding due to a common response to another variable

1.05 Correlation using r-values

Interactive practice questions

Outcomes

3.1.2.2

3.1.3.2

3.1.4.1

3.1.4.2

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