2022/2/12 17:05 MDM4U单词卡 | Quizlet 学习集、教科书、问题 升级：免费试用7天 数学 统计学 个 人 MDM4U 此学习集的词语(27) Simple Random Sampling A sampling procedure in which each member of the population has an equal probability of being included in the sample. A starting point is chosen at random, then after at every nth interval Systematic Random Sampling select that individual for survey. (n is Population Size/Sample size). This is used for sampling a fixed percent of a population. A sampling procedure in which the population is divided into strata Stratified Random Sampling followed by simple random sampling from each stratum. The size of the sample for each stratum is proportionate to the stratum's size. Requires that the population be organized into groups. A random Cluster Random Sampling sample of groups would then be chosen and all members of groups will be surveyed. Requires that the population be organized into groups. A random Multi-Stage Random Sampling sample of groups is chosen and then a random sample of members of the chosen group is taken. Samples from which the selected elements cannot be reintroduced Destructive Sampling into the population (e.g., light bulbs tested for quality control, car crash testing). Bias Sampling Bias Non-Response Bias Household Bias MDM4U Unintended influence on a data-gathering method. When the chosen sample does not accurately represent the population. When the results are influenced because surveys are not returned. When one type of respondent is over represented because groupings of different sizes are polled equally. Response Bias Factors in the sampling method that influence the result. Discrete Data Data that results from a count. https://quizlet.com/55120646/mdm4u-flash-cards/ 1/2 2022/2/12 17:05 MDM4U单词卡 | Quizlet Continuous Data Data Resulting from the measure of quantity. Longitudinal Study A study of a single group (or sample) over a long period of time. Time Series Data Data collected over several time periods usually for a long time. Population The group being studied. Census Information gathered from an entire population. Sample A selection of individuals taken from the population. Cross Sectional Study Inference Open Questions Closed Questions Question Types Primary Data Secondary Data Qualitative Data Quantitative Data https://quizlet.com/55120646/mdm4u-flash-cards/ A study that considers individuals from different groups at the same time. A conclusion made about the population based on sample data. Respondents respond in their own words. Respondents are given a limited number of responses from which to chose. Information questions (age, sex etc), checklist questions, ranking questions, rating questions. Information collected for the specific purpose at hand. Data that has already been collected for some purpose other than the current study. Non-numerical data. Numerical Data 2/2