POL242Y1 Lecture Notes - Central Limit Theorem, Level Of Measurement, Interactive Voice Response
Document Summary
Ekos polls are conducted using interactive voice response (ivr) technology, which allows respondents to enter their preferences by punching the keypad on their phone, rather than telling them to an operator. In an effort to reduce the coverage bias of landline only rdd, we created a dual landline/cell phone rdd sampling frame for this research. As a result, we are able to reach those with a landline and cell phone, as well as cell phone only household and landline only households. This dual frame yields a near perfect unweighted distribution on age group and gender, something almost never seen with traditional landline rdd sample or interviewer administered surveys. The field dates for this survey are october 3-11, 2011. Ontario residents aged 18 and over responded to the survey (including a sub-sample of 2165 decided and leaning voters). The margin of error associated with the total sample is +/- 2. 0 percentage points, 19 times out of 20.
