Sample (no n: a percentage change, not a share of a sample) · a percentage that is not a share of a sample (e.g. a percentage-point change or a weighted estimate of the population)
As shown in Table B.2, assuming a 30 percent response rate (which is in line with historical ASLP surveys), this would require sampling 1,375 principals in both the other states and encouraged BTAM use only states and 2,750 principals in early legislation states.