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RES 342 week 3 PPT J - RES/342 RES/342 Business Business Research and Evaluation II Evaluation Week 3 Todays Agenda Review of Week 2 materials

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RES/342 RES/342 Business Business Research and Research and Evaluation II Evaluation II Week 3 Week 3
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Today’s Agenda Review of Week 2 materials ANOVA, Chi-square & Nonparametric Tests Preview of Week 4
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Chi-Square & Chi-Square & Nonparametric Testing Nonparametric Testing Week Three Content Week Three Content
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Nonparametric Tests
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Nonparametric Tests in Research Nonparametric tests Or distribution-free tests usually focus on the sign or rank of the data rather than the exact numerical value of the variable Do not specify the shape of the parent population, can often be used in smaller samples, and can be used for ordinal data One might expect that nonparametric tests would primarily be used in areas of business where nominal or ordinal data are common (e.g., human resources, marketing). When to use a nonparametric test Ordinal level as a minimum; No assumptions need to be made about the shape of the population
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Nominal scales focus on only requiring a respondent to provide some type of descriptor as the raw response Nominal scales focus on only requiring a respondent to provide some type of descriptor as the raw response Example. Please indicate your current martial status. __Married __ Single __ Single, never married __ Widowed Please indicate your gender 1) Male 2) Female Nominal Scales
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Ordinal scales allow the respondent to express “relative magnitude” between the raw responses to a question Ordinal scales allow the respondent to express “relative magnitude” between the raw responses to a question Example. Which one statement best describes your opinion of an Intel PC processor? __ Higher than AMD’s PC processor __ About the same as AMD’s PC processor __ Lower than AMD’s PC processor Ordinal Scaled Question Please rank your preference of the following mobile phone brands (1 – most preferred to 3 – least preferred) Nokia _____ Motorola _____ Siemens _____ Ordinal Scales
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Interval scales demonstrate the absolute differences between each scale point Interval scales demonstrate the absolute differences between each scale point Example. How likely are you to recommend the Santa Fe Grill to a friend? Definitely will not Definitely will 1 2 3 4 5 6 7 Very Poor Very Good Toyota 1 2 3 4 5 Mitsubishi 1 2 3 4 5 Nissan 1 2 3 4 5 Please rate each car brand in terms of its overall performance Interval Scales
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Ratio scales allow for the identification of absolute differences between each scale point, and absolute comparisons between raw responses Ratio scales allow for the identification of absolute differences between each scale point, and absolute comparisons between raw responses Example. Please circle the number of children under 18 years of age currently living in your household. 0
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This note was uploaded on 10/12/2011 for the course BUSINESS 317 taught by Professor Jackhandy during the Spring '11 term at University of Phoenix.

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RES 342 week 3 PPT J - RES/342 RES/342 Business Business Research and Evaluation II Evaluation Week 3 Todays Agenda Review of Week 2 materials

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