R Programming for Statistics and Data Science - Comparing Two Means - Independent Samples

R Programming for Statistics and Data Science - Comparing Two Means - Independent Samples

Assessment

Interactive Video

Mathematics

11th - 12th Grade

Hard

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The video tutorial covers the process of conducting an independent samples T-test to compare average grades between engineering and management departments at a UK university. It explains hypothesis formulation, data preparation using the gather function, and running the T-test in R. The tutorial also discusses Welsh's T-test for unequal variances and interprets the results, concluding with a summary of the findings.

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3 questions

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1.

OPEN ENDED QUESTION

3 mins • 1 pt

What adjustment does Welsh's T test make to the degrees of freedom?

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2.

OPEN ENDED QUESTION

3 mins • 1 pt

Explain the significance of the P value of 0.016 in the study.

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3.

OPEN ENDED QUESTION

3 mins • 1 pt

How did the teacher conclude that the difference in department performance is larger than 4%?

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