NZ Level 8 (NZC) Level 3 (NCEA) [In development]
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

A perfect positive correlation

A

A perfect negative correlation

B

No relationship

C
Easy
Less than a minute

A correlation coefficient of $0$0 indicates

A correlation coefficient of $-1$1 indicates:

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.

### Outcomes

#### S8-1

Carry out investigations of phenomena, using the statistical enquiry cycle: A conducting experiments using experimental design principles, conducting surveys, and using existing data sets B finding, using, and assessing appropriate models (including linear regression for bivariate data and additive models for time-series data), seeking explanations, and making predictions C using informed contextual knowledge, exploratory data analysis, and statistical inference D communicating findings and evaluating all stages of the cycle.

#### 91581

Investigate bivariate measurement data

#### 91582

Use statistical methods to make a formal inference