Page 58 - Quantitative Data Analysis
P. 58
Quantitative Data Analysis
Simply Explained Using SPSS
Simple Test Statistics
One Sample Z-Test
One sample Z-test is used when a researcher wants to compare one
sample mean value with the population mean value.
Questions answered:
1. Did a particular sample come from a given population?
2. Is a group mean significantly different/greater/less than the
population it represents?
Formula:
̅
√
Where ̅ = sample mean
= population mean (given)
= population standard deviation (given)
= sample size
The Theory and Applications of Statistical Inferences 42
