How were the cases where survey respondents did not answer a question treated in calculating the estimates?
The treatment of those cases varies with the survey question. For some measures, values for those missing cases were imputed and then included in calculation of the CTSonline estimates. For other measures, there was no imputation, and so those cases were excluded. Information about which approach was taken is provided in the footnotes that are displayed along with each table.
The treatment of those cases varies with the survey question. For some measures, values for those missing cases were imputed and then included in calculation of the HSCdataOnline estimates. For other measures, there was no imputation, and so those cases were excluded. Information about which approach was taken is provided in the footnotes that are displayed along with each table.
Related Questions
- Was there a specific reason why EPA did not ask the survey respondents to indicate which responses are based on estimates (other than for waste characteristics)?
- How were the cases where survey respondents did not answer a question treated in calculating the estimates?
- Can personalised messages be sent to respondents based on how they answer the survey questions?
