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# MDM4U单词卡 Quizlet

```2022/2/12 17:05
MDM4U单词卡 | Quizlet

MDM4U

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.
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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
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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
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