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This is just an overview and is not exhaustive!
Exam Two: Study Guide This is just an overview and is not exhaustive!
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Ch. 15) Parametric v. Non-parametric Scales
Non-parametric level scales: Parametric level scales: Nominal level Scale: Interval level scale: Ordinal level scale: Ratio level scale:
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Ch. 15) SPSS Windows: One Sample t Test
Choose your TEST VARIABLE(S): “Income” Choose your TEST VALUE: “$55,000” Results: Mean = $60,700 P-value of the t-test = .519 There is no statistical difference between the mean of the sample and $55,000.
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15) SPSS Windows: Two Independent Samples t Test
Choose your TEST VARIABLE(S): “Attitude toward Nike” Choose your GROUPING VARIABLE: “Sex” Results: Means = 3.52 (Female) compared to 5.00 (Male). P-value of the t-test = .006 There is a statistical difference between men and women in regards to attitude towards Nike.
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Ch. 15) SPSS Windows: Paired Samples t Test
Results: Means = 4.35 (Awareness) compared to 4.31 (Attitude). P-value of the t-test = .808 There is no statistical difference between awareness of Nike and attitude towards Nike. Choose your first TEST VARIABLE: “Awareness of Nike” Choose your second TEST VARIABLE: “Attitude toward Nike”
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Ch. 8) Importance of Bathing Soap Attributes Using a Constant Sum Scale
Form Average Responses of Three Segments Attribute Segment I Segment II Segment III 1. Mildness 2. Lather 3. Lasting Power 4. Price 5. Fragrance 6. Packaging 7. Moisturizing 8. Cleaning Power Sum 8 2 4 17 3 9 7 53 19 5 20 13 60 15 100
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Ch. 9) Itemized Rating Scales: Types
Continuous rating scales (e.g ) Itemized rating scales are: Likert scale Example: Strongly disagree, Disagree, Neither agree nor disagree, Agree, Strongly agree Semantic differential scale Extremely bad, Bad, Neither bad nor good, Good, Extremely good Stapel scale +5, +4, +3, +2, +1, useful, -1, -2, -3, -4, -5
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Ch. 10) Questionnaire & Form Design
What are/is: Double-barreled questions? Grids/matrices? Filter questions? The funnel approach? What do you do with sensitive info?
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Ch. 11) Classification of Sampling Techniques
Nonprobability Probability Convenience Sampling Judgmental Quota Snowball Systematic Stratified Cluster Simple Random
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Ch. 13) Aspects of Field Work
Single blind v. Double blind: Single-blind describes experiments where information that could skew the result is withheld from the participants, but the experimenter/researcher will be in full possession of the facts. Double-blind describes experiments where information that could skew the result is withheld from the participants and the experimenter/researcher. Watch out for: Confounding variables Observer bias
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Ch. 14) Data Preparation What is/are: Imputation?
Pairwise and casewise deletion? Outliers? Dummy variables? Variable respecification?
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Ch. 17) Interpreting Correlation
Correlations Age InternetUsage InternetShopping Pearson Correlation 1 -.740 -.622 Sig. (1-tailed) .000 .002 N 20 .767
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Ch. 7) The Different Classifications of Experimental Designs
Pre-experimental One-Shot Case Study One Group Pretest-Posttest Static Group True Experimental Pretest-Posttest Control Group Posttest: Only Control Group Solomon Four-Group Quasi Experimental Time Series Multiple Time Series Statistical Randomized Blocks Factorial Design Experimental Designs
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