According to our research of Iowa and other state lists there were 58 registered sex offenders living in 50701 zip code as of April 10, 2017. The ratio of number of residents in zip code 50701 to the number of sex offenders is 496 to 1.
Customer survey questionnaires heavily depend on demographic questions. If your questionnaire results tell you that 65% of your respondents are Males in the 25 to 39 age group, your advertising would focus on that age and gender group as they would make up a large portion of your customer base. Your categories need to be broken up into divisions that make sense for your research.
Your average survey respondent can start to feel that way about 15 minutes into a survey. Fifteen minutes is a good upper-limit for most surveys. When a survey is too long, three bad things can happen: Respondents drop out: They simply quit taking the survey. It costs money to find respondents, and a high drop-out rate can not only cost a lot, but can influence the quality of your results.