20190112_153456.jpg - Sampling Types y 12:22 AM To obtain a...

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Unformatted text preview: Sampling Types y, September 29, 2017 12:22 AM To obtain a sample, we use a sampling technique There are Sampling Type Mesnin (Simple ) Random A sample is chosen from the whole population in a way that guarantees every group of that size has an equal chance of being cho sen . * Note * Here, random means "fair " or equally likely," not informal or arbitrary. Systematic All individuals are numbered sequentially Randomly, choose starting individual ( 1, 2, 3, 4, . . ) and the first person is chosen randomly. The remaining people are Then take third Chosen using a fixed spacing, like "every fifth person. Stratified Groups Randomly The population is first broken in to Choose a group groups '(strata" ). Then equal-sized Population Choose - Choose random samples are taken from each group. s Choose 3 Cluster Grou The population is again broken into From the Chosen groups (clusters"). Now we randomly of the groups Kandomly Choose 3 groups take all choose the groups, and then take individuals all individuals from each chosen group. Convenience (Try to avoid) Anyone who is easy to contact is included in the sample. * This type produces unreliable results. * M146-W18 Page 2...
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