Last year Ofcom, the telecoms regulator, admitted that the telephone preference service, designed to let households block calls, was failing to stop two-thirds of unsolicited calls and messages.
In addition, the panel recommends that the census bureau implement better procedures to ensure that sampling captures the ethnic diversity within a 30-household block.
For instance, survey workers should sample at least seven to 10 households in a 30-household block--as opposed to just three, as the bureau proposes.
The probability of selection was defined as a function of the geographic strata, households' blocks, and sex distribution according to post-censal estimates in Puerto Rico.
In 1970, the court upheld a statute that allowed a household to block mail from any sender simply by notifying the local postmaster.
In order to enhance our understanding of the impacts of rural migration on household livelihoods, block discriminant models were also used to analyze differences among the three more narrowly-defined subgroups in the survey sample: labor-migrant households, local off-farm work households, and farming households (Table 4).
Twelve households per block for a total of 204 households (12 households × 17 blocks) were randomly preselected for the monitoring visits.
Fifteen households per block in municipal areas and 12 households in non-municipal areas were selected as sample households.
Although President Bush signed the law authorizing the list yesterday, a federal judge last week ruled that it violates the First Amendment because it allows households to block commercial telemarketing calls but not calls from charities, political parties, religious groups or other nonprofit organizations.
McIntosh et al. (2013) studied the effect of the program across a wide range of indicators, including property prices using household and block-level data.
