Page 62 - Quantitative Data Analysis

Quantitative Data Analysis
Simply Explained Using SPSS

Unit # 4

Independent ‘t’ Test

Learning Outcomes

At the end of this unit, readers will be able to:
 Understand and to conduct independent-samples t-tests.
 Perform a 7-step hypothesis test for two means using the
appropriate formula.
 Extract the appropriate information from a problem to
perform a complete 7-step hypothesis test.

 Identify when to use independent t test.
 Perform independent t-test calculation by hand.

 Practically conduct independent t test in SPSS.
 Understand the assumptions for an independent t-test.
 Interpret t test results.
 Write statistical and research conclusion in APA style.

Steps for Statistical Inference
1. Research Hypothesis
2. Statistical Test
3. Null /Alternative Hypothesis
4. Set level of significance and critical values
5. Compute Test Statistic
6. Reach Statistical Conclusion
7. Reach Research Conclusion

The Theory and Applications of Statistical Inferences 46