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Unformatted text preview: Name that analysis… TYPES OF VARIABLES LEVELS OF MEASUREMENT Independent Variable Nominal Nominal Dependent Variable Nominal Ratio/interval Statistical analysis? _________? _________? 1 ScWk 242 Week 7 Spring 2008 t ‐ tests • t –test: independent variable is nominal, but dependent variable is ratio/interval. • The t –test compares means – Independent sample t ‐ test Comparing the means of two independently chosen samples • H A : SJSU students receiving post ‐ grad test preparation will score higher in the LCSW exam compared to those SJSU students who did not receive post ‐ grad test preparation – Dependent (or Paired) sample t –test Comparing the means of two related samples, or more typically, the same sample measured twice • H A : LCSW test preparation will result in reduced anxiety as measured by a ratio level anxiety scale score, comparing scores pre ‐ and post ‐ test preparation – One sample t –test Comparing a sample mean to that already known in the population...
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- Statistics, Null hypothesis, Hypothesis testing, Statistical hypothesis testing, 2. 3. 4. 5. 6. 7. 8