ISDS 2000 : Test 1 ISDS 2000
15 Mar 2019
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Document Summary
Discrete variable- a counting number that is finite. Continuous variable- any number on the continuous number line. Ordinal- quantitative or qualitative but can be ordered. Secondary data- getting your data collected by someone else. Mutually exclusive- excludes other data from the specific category. This interval, called the sampling interval, is calculated by dividing the population size by the desired sample size. 50,000/1,000= every 50th item: stratified sample- division of a population into smaller groups known as strata. The strata are formed based on shared characteristics. A random sample from each stratum is taken to form a random sample of the population. Better than srs or systematic sampling because has variety of population: some from all , cluster sample- the entire population is divided into clusters based on characteristics and a random sample of these clusters are selected, all from some .
