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Introductory Statistics Textbook Overview

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Introductory Statistics Textbook Overview

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Questions and Answers

What type of variables are required for a Chi2 test?

Categorical variables (correct)

Continuous variables

Quantitative variables

Parametric variables

Which of the following terms is NOT essential to understand before learning about Chi2 analysis?

Null hypothesis

Regression (correct)

Categorical data

P-value

What is the main purpose of a Chi2 test?

To test hypotheses about means

To calculate effect size

To determine population parameters

To assess relationships between categorical variables (correct)

What type of test is a Chi2 analysis considered to be?

Non-parametric test (D) Signup and view all the answers

What type of data is represented by an ascending bar chart in the 'How did they feel' column?

Ordinal data (D) Signup and view all the answers

What values do we compare in a chi squared test?

Observed values and expected values (D) Signup and view all the answers

Why does Chi2 not measure mean?

You cannot take the mean of categorical data (A) Signup and view all the answers

In a chi squared test, what do the expected values represent?

Expected values represent what would be seen if the null hypothesis was true. (A) Signup and view all the answers

Which assumption is crucial to consider when conducting a T-test?

Normality (B) Signup and view all the answers

What is a key requirement for the application of a one-tailed T-test?

Direction of Expected Difference (D) Signup and view all the answers

Why is it important for observations to be independent in a T-test?

To avoid overlap in values (C) Signup and view all the answers