Textbook vs. online video: One seems to be a better learning tool. Are the differences between the outcomes for these two groups meaningful? With the use of a hypothesis test we attempt to find out, in this tutorial.
- So let's continue our same example.…200 students preparing for a math test.…120 had access to an online video.…This group averaged 16.2 correct questions…out of 20 on the exam.…The Standard deviation for this group is 2.5.…In another group, 80 students learn from a textbook.…This group averaged 14.1 correct questions on the exam.…The Standard deviation of their scores was 3.6.…
The average score for the online video group…was 2.1 questions higher than that of the textbook group.…So does this data make you feel like the online video…is more effective than the textbook?…To find out, let's perform a Hypothesis Test.…Let's begin by setting up our two hypotheses.…Our Null hypothesis will be that the online video…and the textbook are equally effective.…
There is no difference in their ability to prepare…the students for this exam.…In other words, the difference between the population means…of these two groups would be 0.…We would state this Null hypothesis…as the Population mean exam score…for the online video group minus…
Author
Eddie Davila
Released
12/19/2016- Working with small sample sizes
- Using t-statistic vs. z-statistic
- Calculating confidence intervals with t-scores
- Comparing two populations (proportions)
- Comparing two population means
- Chi-square testing
- ANOVA testing
- Regression testing
Skill Level Advanced
Duration
Views
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Introduction
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Welcome2m 4s
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1. The Statistics Series: A Look Back and Forward
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2. Small Sample Sizes
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T-statistic vs. z-statistic3m 44s
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3. Comparing Two Populations (Proportions)
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Set up a comparison4m 37s
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Hypothesis testing6m 41s
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4. Comparing Two Populations (Means)
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Set up a confidence interval5m 15s
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Hypothesis testing5m 45s
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5. Chi-Square
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Introduction to chi-square2m 53s
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Curves and distribution3m 48s
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Goodness-of-fit test6m 25s
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6. ANOVA: Analysis of Variance
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7. Introduction to Regression
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What is regression?3m 29s
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The best-fitting line3m 32s
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Conclusion
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Next steps1m 40s
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Video: Hypothesis testing