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BIOL2022 L01 Why statistics? Organisms are variable in a variable world.

Michael Jardine

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BIOL2022 L05 Testing differences between two means: 1- and 2-tailed t-tests

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Module 1, Lecture 5 By the end of this lecture you should understand: - Carrying out a t-test - One- and two-tailed t-tests

Quiz by Michael Jardine, updated more than 1 year ago

	Created by Michael Jardine over 6 years ago

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Resource summary

Question 1

Question

Logical vs statistical null: x = # of koalas in Trees; y = # of koalas on Floor Hypothesis: [x] > [y] Logical Null Hypothesis: [x] [blank_start]____[blank_end] [y] Statistical Null Hypothesis: [x] [blank_start]____[blank_end] [y]

Answer

Question 2

Question

Type I vs Type II errors

Image:

L05 Image 1 (binary/octet-stream)

Answer

Type I
Type II

Question 3

Question

A t-test compares:

Answer

Means
Variance
Error

Question 4

Question

1-tailed vs 2-tailed t-tests: Which one is directional?

Answer

1-tailed
2-tailed
Both
Neither

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