Determine which sampling technique is used in the following cases for 27-33. 27.

Question

Determine which sampling technique is used in the following cases for 27-33. 27. Divide the class of 37 children in 15 girls and 22 boys. Randomly choose 3 boys and 3 girls. 28. A quality control manager at the Intel Corporation chooses every 50th chip and checksit for any potential defects. 29. Out of eleven tenth grade classes, three of those classes are randomly chosen to take a SAT test. 30. Divide the class of 100 students into 4 groups based on their majors and randomly choose two groups and include everyone in your sample. 31. Selecting all students in the first row in a classroom 32. Selecting every kth students entering a classroom. 33. Randomly select ten passengers in an airport and ask for their reasons for travelling. Determine the levels of measurements for the following: 34-43. 34. The scores of section 21 students on a given test. 35. The blood types. 36. The eye colors of 25 people in a locality. 37. Mileage of 29 vehicles on a given day. 38. The monthly expenses of a family. 39. The day temperatures recorded on January 1 in every state of the USA 40. Temperature recorded using Kelvin scale. 41. Surveying people about their political affiliation. 42. Measuring the time it takes to run an experiment. 43. Rating how good a movie is by rating one. two. three or four stars

Explanation / Answer

27. Stratified Random Sampling: Divide the population into "strata". There can be any number of these. Then choose a simple random sample from each stratum. Combine those into the overall sample. That is a stratified random sample.

28.Systematic Sampling

29. Simple Random Sampling: A simple random sample (SRS) of size n is produced by a scheme which ensures that each subgroup of the population of size n has an equal probability of being chosen as the sample.

30. Cluster sampling

PS : We are directed to solve only the first question when multiple questions are posted

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