Hilgard, Ernest R. <br/><br/>
Those not at home: riddle for pollsters 

<br/><br/> Contenido: Change in the interview sample from call to call. How results of interviews obtained on later calls affect market data. Effects of late calls on the results of opinion surveys. Tables. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LEY 4144