Citizens Advice data from an online survey of 6,000 UK adults plus a boost of 243 respondents in receipt of Universal Credit to make a total of 1,215 respondents in receipt of Universal Credit. Fieldwork was conducted by Walnut Unlimited on behalf of Citizens Advice. Fieldwork was undertaken between 9 January - 8 February 2023. The figures have been weighted and are nationally representative. The figures for the Universal Credit boost are weighted to be representative of the demographics of those receiving Universal Credit.
If that survey were properly randomly sampled across the UK population, the 95% confidence interval for that sample size would be around +/- 200,000 people: i.e. we are 95% sure that between 800,000 and 1.2M people canceled broadband (or whatever the question is in the survey).
Even if the 6000 people surveyed are selected from those who seek help from Citizens Advice, there are ways to make reasonable inferences from that.
> Citizens Advice said its survey of 6,000 people suggested
big difference between the title and a survey of 6000 charity customers.