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North Suburban Communications Commission Cable Study <br />Introduction & Study Methodology <br />During the period September 21— October 1, 2011, 400 completed interviews <br />were conducted by telephone survey. Interviews were administered to a <br />sample of Comcast cable subscribers in the 10 member cities of the North <br />Suburban Communications Commission, drawn at random from active <br />residential telephone numbers. <br />The telephone interviews were conducted utilizing computer assisted <br />telephone interviewing and data collection methods with trained, professional <br />telephone interviewers and validated by on-site supervisors. <br />The survey was designed to allow for analysis of the entire sample and also to <br />allow for cross tabulation analysis utilizing various demographic information <br />provided by the respondents. <br />The margin of error for sample wide analysis using a random sample of this <br />type and size is approximately 4.9% at the 95% level of confidence, meaning <br />that in 95 out of 100 cases, the responses indicated will be within +/-4.9% of <br />the responses if the entire universe (all Comcast cable subscriber households <br />in the 10 town NSCC service area with a working residential phone) were <br />interviewed. The margin of error for analysis of any sub -samples will be <br />greater. <br />As with all survey research, when reviewing these data, care must be taken <br />to draw inferences only to the universe sampled, specifically, households in <br />Group W Communications, LLC 1 <br />3 <br />