15 Questions
Which of the following is a method used to correct non-normally distributed data?
Normal probability plot
What percentage of cases will lie within 2 standard deviations of the mean in a normal distribution?
95.44%
Which of the following represents the probability that lies within 3 standard deviations of the mean in a normal distribution?
99.14%
What is one way to visually assess normality?
Looking at a histogram of frequencies
What percentage of cases will lie within 1 standard deviation of the mean in a normal distribution?
68.26%
Which of the following is a way to visually assess normality?
Looking at a histogram
Which statistical test is used to check the normality of a distribution?
Kolmogorov-Smirnov D test + All of the above
Which graphical method can be used to visually assess normality?
Q-Q plot
What does a straight line formed by a P-P plot indicate about the variable's distribution?
It is normally distributed
Which statistical test is used to test the assumption of equal variance?
Levene's test
What does a significant Levene statistic indicate?
The groups have different variances
What is the significance level typically used to determine the rejection of the null hypothesis in Levene's test?
.05
Which of the following best describes a random factor?
A factor whose levels are randomly sampled from a large population
Which of the following best describes a fixed factor?
A factor whose levels are fixed and not randomly sampled
In some cases, factors can be used as both fixed and random. Which of the following is an example of such a factor?
Locations
Test your knowledge of linearity checks in statistical analysis with this quiz. Learn about scatter plots, standardized residuals, ANOVA tests, and more.
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