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Quiz | Basics of Data Analysis

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Quiz | Basics of data analysis

1 / 24

What does an outlier represent in data analysis?

2 / 24

The difference between correlation and causality is that …

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What best describes a factor analysis?

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How does multivariate analysis differ from bivariate analysis?

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In statistical hypothesis testing, what represents the risk of rejecting a true null hypothesis?

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What describes an ordinal scale?

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What scale level is required for the application of the t-test?

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What do the 'whiskers' in a boxplot typically represent?

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What is meant by the centering property of the mean?

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What is the primary purpose of conducting a statistical test for means?

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What is the role of dummy variables in regression analysis?

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Which percentile is represented by the bold horizontal line in a boxplot?

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What does a two-tailed t-test in hypothesis testing involve?

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Which of the following scale levels allows for the most arithmetic operations?

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What statements are correct?

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What does the alternative hypothesis suggest in a statistical test?

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What statistical method divides the difference between the observed and hypothetical mean by the standard error of the mean?

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What type of analysis is most appropriate for understanding the effect of different levels of a nominal independent variable on a metric dependent variable?

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Which of the following methods do not allow to detect outliers?

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In data analysis, what is meant by 'interval estimation'?

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Which statements about statistical parameters are correct?

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What is meant by the 'significance level' in hypothesis testing?

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What is the primary difference between exploratory and confirmatory factor analysis?

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What is a dummy variable?

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