Topics
1. Analysing Data
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AustraliaAU
Year 12

1.05 Correlation using r-values

Lesson
Worksheet
Practice

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

ACMGM053

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

ACMGM056

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

ACMGM064

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

ACMGM065

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

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