As a sample of the population is used, estimates of household income are produced. As a result, there is uncertainty around these figures. The results from the 20,000 households around the UK are scaled up to represent UK results. A confidence interval indicates the extent to which an estimate may differ from the true value. Big confidence interval = less precise estimate
< Lower bound: 9.5%Estimate: 10%Upper bound: 10.6% > Small confidence interval = more precise estimate
Lower bound: 9.9% >Estimate: 10%< Upper bound: 10.1%
More information can be found through the HBAI statistics collection.
For enquiries please contact the HBAI team at: team.hbai@dwp.gsi.gov.uk