Data Collection & Involvement Terms Flashcards
gathers information about a population at a single point in time. For example, planners might conduct a survey on how parents feel about the quality of recreation facilities as of today
cross-sectional survey
survey over a period of time, e.g. some cities conduct a citizen survey of service satisfaction every couple of years. This data can be combined to compare the differences in satisfaction between 1995 and 2005.
longitudinal survey
written survey with a low response rate (average 20%) and requires strong visual and literacy skills (barriers to seniors, non-English speakers, etc)
mail survey
high and quick response rate, small sample size survey, such as giving all participants of a rec program a survey at the end of class
group-administered surveys
survey to be left at someone’s residence or business and complete the survey at their convenience. Response rates are higher because the person delivering the survey may have personal contact with the respondent. This method can be expensive because of the time required to distribute the surveys. The sample is generally smaller than with a mail survey.
drop-off survey
Can be for yes/no, or allow the interviewer to follow up and gain further explanation on answers. Response rates are declining, more expensive to administer, can be biased due to interaction with the interviewer. Long questions and those with multiple answers are difficult to administer using this method.
phone survey
an inexpensive method of surveying that can generate quick responses. A higher response rate but will not reach people with tech barriers, which can introduce significant bias.
online survey
survey preparation to ensure results represent the population about which information is being gathered
sample design
a direct mathematical relation between the sample and the population, so that precise conclusions can be drawn
probability sampling (random, systematic, stratified, cluster random samples)
the population is divided into separate groups or classes, from which a sample is drawn such that the classes in the population are represented by the classes in the sample. Most electoral surveys
stratified sampling
a specific target group out of the general population is sampled from, such as the elderly, or residents of a specific neighborhood.
cluster sample, a special form of stratified sampling
no precise connection between the sample and the population, so that the results have to be interpreted with caution since they are not necessarily representative of the population
non-probability sampling (convenience sample, snowball sample (word of mouth chain), volunteer etc)
the three Vs of relevance and valitity of big data
volume, velocity and variety
represention favors one fraction of the population rather than the whole
selection bias
a technique that planners can use to reframe controversial issues, responding to opponents while also recasting how the issue is viewed. The trick is to use transitional phrases to stay on message when asked a question that could take you off topic.
bridging