Comparing Two Segments: Difference in Proportions & z-Test
This lesson is part of the course
In this lesson
You test whether app customers really recommend Brightwell more often than website customers, or whether the gap could be chance.
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Lessons in this course
- Response Rate & Sample Quality Locked
- Likert Scales: Distribution, Top-2-Box & Mean Score Locked
- Net Promoter Score: Promoters, Passives & Detractors Locked
- Cross-Tabs by Segment: COUNTIFS & Row Percentages Locked
- Weighting Responses to Match the Population Locked
- Margin of Error, Small Populations & Sample Size Locked
- Comparing Two Segments: Difference in Proportions & z-Test Locked
- Chi-Square Test of Independence & Coding Open Answers Locked