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Tests for Equality of Variances and Normality in Statistics

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Tests for Equality of Variances and Normality in Statistics

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Questions and Answers

Which of the following is a disadvantage of using Real Strength with skewed distributions?

It is more likely to commit a type II error (correct)
It is not suitable for small sample sizes
It cannot be used with complex research designs
It is more likely to commit a type I error

What is the purpose of the Paired Samples t-Test?

To determine if the mean difference between two paired groups is significantly different from zero (correct)
To test the relationship between a continuous and a categorical variable
To compare the means of two independent groups
To analyze the variance between more than two groups

Which of the following is not an assumption of the Paired Samples t-Test?

The variances of the two groups should be equal (correct)
The difference of the observations of the paired groups should be normally distributed
The dependent variable should be continuous
The two groups should be dependent or paired

What is the null hypothesis for the Paired Samples t-Test?

There is no significant difference between group 1 and group 2 (B) Signup and view all the answers

Which statistical test is an extension of the independent t-test?

One-way ANOVA (D) Signup and view all the answers

Which of the following is a requirement for using the Paired Samples t-Test?

The two groups should be dependent or paired (B) Signup and view all the answers

What is the purpose of a nonparametric test like Real Strength?

To test the performance of a statistical model with skewed distributions (A) Signup and view all the answers

Which of the following is a correct statement about the Paired Samples t-Test?

It is used to determine if the mean difference between two paired groups is significantly different from zero (D) Signup and view all the answers

What is the alternative hypothesis for the Paired Samples t-Test?

There is a significant difference between group 1 and group 2 (C) Signup and view all the answers

Which of the following is a characteristic of a nonparametric test like Real Strength?

It is more robust to violations of assumptions, such as non-normal distributions (C) Signup and view all the answers