Choosing a Statistical Test Flashcards
What is levels of measurement?
Nominal, ordinal or interval
What is statistical tests?
Used in psychology to determine whether a significant difference or correlation determining whether the null hypothesis should be rejected or retained
Which statistical test should be used when containing:
- Test of difference
- Nominal data
- Unrelated design
Chi-squared
Which statistical test should be used when containing:
- Test of difference
- Ordinal data
- Unrelated design
Mann-Whitney
Which statistical test should be used when containing:
- Test of difference
- Interval data
- Unrelated design
Unrelated t-test
Which statistical test should be used when containing:
- Test of difference
- Nominal data
- Related design
Sign Test
Which statistical test should be used when containing:
- Test of difference
- Ordinal data
- Related design
Wilcoxon
Which statistical test should be used when containing:
- Test of difference
- Interval data
- Related design
Related t-test
Which statistical test should be used when containing:
- Test of association or correlation
- Nominal data
Chi-squared
Which statistical test should be used when containing:
- Test of association or correlation
- Ordinal data
Spearman’s rho
Which statistical test should be used when containing:
- Test of association or correlation
- Interval data
Pearson’s r
What is nominal data?
- Data is represented in the form of categories
- Discrete
What can nominal data be referred to?
Categorical data
What is ordinal data?
- Ordered in some way
- Does not have equal intervals between each unit
What does ordinal data lack in?
Precision as based on subjective opinion
What is interval data?
- Based on numerical scale with equal intervals between each unit
- Public scales of measurements
- Precise and sophisticated form of data
What is the relation to nominal data to measures of central (CT) tendency and dispersion (D)?
- Mode for CT
- N/A for D
What is the relation to ordinal data to measures of central (CT) tendency and dispersion (D)?
- Median for CT
- Range for D
What is the relation to interval data to measures of central (CT) tendency and dispersion (D)?
- Mean for CT
- Standard deviation for D
