NZ Level 7 (NZC) Level 2 (NCEA)
Features of Populations and Samples

## Interactive practice questions

Which of the following is the notation for the population mean?

$\mu$μ

A

$s$s

B

$\overline{x}$x

C

$\sigma$σ

D

$\mu$μ

A

$s$s

B

$\overline{x}$x

C

$\sigma$σ

D
Easy
Less than a minute

Which of the following is the notation for the population standard deviation?

Which of the following is the notation for the sample mean?

Which of the following is the notation for the sample standard deviation?

### Outcomes

#### S7-2

S7-2 Make inferences from surveys and experiments: A making informal predictions, interpolations, and extrapolations B using sample statistics to make point estimates of population parameters C recognising the effect of sample size on the variability of an estimate

#### 91264

Use statistical methods to make an inference