Use of samples

A State may comply with subparagraph (A) by submitting disaggregated case record information on a sample of families selected through the use of scientifically acceptable sampling methods approved by the Secretary.

The Secretary shall provide the States with such case sampling plans and data collection procedures as the Secretary deems necessary to produce statistically valid estimates of the performance of State programs funded under this part and any other State programs funded with qualified State expenditures (as defined in section 609(a)(7)(B)(i) of this title ). The Secretary may develop and implement procedures for verifying the quality of data submitted by the States.