Understanding Business Research

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University of Phoenix Material Understanding Business Research Terms and Concepts: Part 3 Part I: Sampling design identification: (3 pts.) Each correct answer is worth .50 pt. Which probability sampling design —simple random, systematic, stratified, or cluster, or nonprobability sampling design - convenience, judgment, quota, or snowball is most appropriate for the following examples? 1. A researcher selects five states randomly, and then selects fifteen credit unions within each state to call for a phone survey about proposed new regulations. Quota 2 After conducting an interview with a key informant, the researcher asks the respondent for the names of other facilitators that use online focus groups. Snowball 3. A researcher…show more content…
Probability -Cluster 5. A researcher instructs field interviewers to interview customers of different cell phone companies in a nearby shopping mall. Nonprobability- convenience 6. A Quick Serve Restaurant chain selects Peoria, Illinois, Ann Arbor, Michigan, and Lexington, Kentucky to use as test markets for a new sandwich based upon previous cooperation from franchise owners. Nonprobability-snowball Part II: Statistical testing identification: (4 pts.) Which test of significance (one sample, two-sample related, two sample-independent, ANOVA or chi square) would you use in the following situations? Each correct answer is worth .80 pt. 1. An intersection with a high accident rate undergoes a safety revision. The number of accidents is then compared to the number of accidents prior to the change for a similar time period. Two samples related Two: This statistical test involves a cross-tabulation of two nominal level variables. Chi-square 3. A researcher calculates the home ownership percentage of the Easton neighborhood from sample data, and compares the result to the national average.

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