3.6 Probabilities and estimation

S4 Population and sample

	Content	Additional information
S4.1	understanding what is meant by the term ‘population’ in statistical terms
S4.2	developing ideas of sampling to include the concept of a simple random sample from a population

	Content	Additional information
S5.1	knowing that the mean of a sample is called a ‘point estimate’ for the mean of the population	appreciating that accuracy is likely to be improved by increasing the sample size

	Content	Additional information
S6.1	confidence intervals for the mean of a normally distributed population of known variance using $\frac{σ^{2}}{n}$	confidence intervals will always be symmetrical the confidence level required and the sample size will always be stated

Content

Additional information

S6.1

confidence intervals for the mean of a normally distributed population of known variance using $\frac{σ^{2}}{n}$

confidence intervals will always be symmetrical

the confidence level required and the sample size will always be stated