Long Test Flashcards
(22 cards)
What is Descriptive Statistics necessary for?
Necessary treatment for quantifiable data, especially when unveiling details.
Define Mean in statistics.
Average
What does Median represent?
Middle
What is Mode?
Most frequent
What does Range measure?
How spread
What does Standard Deviation indicate?
How far from mean; how close to mean
What is Skewness in a distribution?
Normal, if shape is normal; otherwise, skewed.
Define Kurtosis.
Peak of distribution
What parameters follow the standard levels?
- High (75%)
- Average (50%)
- Low (25%)
What is the purpose of Inferential Statistics?
Provides interpretation for hypotheses, such as finding significant differences.
What does Pearson r show?
Significant relationships; correlational statistical treatment.
What is a one-way ANOVA used for?
To give a definite answer about significant relationships/effects.
What is the Independent Variable (IV) in the given research design?
- Lecture
- Flipped class
- Problem-based learning
List the assumptions for ANOVA.
- 1 DV with 3 or more levels
- IV and ideally an unbiased sample
- Normal distributed data
- Interval or ratio data
- Random sampling
What does a 2-way ANOVA examine?
The effect of 2 IVs on the DV and explores interactions between them.
What is the purpose of a T-test?
Compares two means (comparing differences)
When do you use T-test for Independent Samples?
To compare the means of two independent groups (unrelated).
When do you use T-test for Dependent Samples?
For two related groups or conditions.
Define Z-test.
Statistical measures used to compare proportions or means between two groups.
What is the sample size requirement for Z-tests?
30+ samples
When is the standard deviation known?
In Z-tests for independent and dependent samples.
What is the main difference between Independent and Dependent T-tests?
- Independent - Must be independent
- Dependent - Should be paired
