Join Yash Patel for an in-depth discussion in this video Assumptions and hypotheses, part of SPSS for Academic Research.
- [Instructor] A lot of the assumptions for this test…are going to look similar to the other tests.…For example, you can only have one…dependent variable and it must be continuous.…Ours is salary and that fits the bill.…Second, the observations must be independent of each other.…There should be no relationships…between the participants in any of the groups.…Third, you should try to get a balanced design…that's equal sample sizes for each level.…This very rarely happens in real life,…so don't worry too much if you violate this assumption.…
There are ways to control for it.…Fourth, the variance of the dependent variable residuals…should be approximately equal.…This is commonly known as…maintaining homogeneity of variance.…We can determine if this assumption is met…using Levene's test of equality.…Finally, there should be no outliers…in any cell of the design.…That can be checked using boxplots.…You'll have three null hypotheses,…and as such, three alternative hypotheses…that are the exact opposite of the null.…
Here are the nulls.…
- Quantitative vs. qualitative analysis
- Sample size considerations
- Normal distribution
- Estimating the population mean
- One-sample t-test
- Paired-sample t-test
- One-way and two-way ANOVA
- Repeated measure ANOVA
Skill Level Beginner
1. General Notions about Science and Research
2. Quantitative Research Fundamentals
3. One-Sample T-Test
4. Paired-Samples T-Test
5. Balanced One-Way ANOVA
6. Two-Way ANOVA
7. Repeated Measures ANOVA
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