LC1-RMA24SS

Which of the answers are correct? A nominal scale …

• • …has an absolute zero point

• …possesses all properties of an ordinal scale

• …can have numerical values

• …serves as a label to classify/categorize objects

• • None of these

In causal inference tasks, …

• …the main concern is to generate predictions of future outcomes

• …the main concern is to maximize the explained variance

• …observational research is the ‘gold standard’

• …randomization minimizes unsystematic variation

• None of these

True or false? Reliability refers to the consistency of a measurement.

• True

• False

Conditions for causality are …

• • … a cause and an effect should vary together in the way predicted by the hypothesis under consideration

• … random assignment of test units

• … the causing event must occur before the effect

• … absence of other possible causal factors

• None of these

In predictive modeling tasks …

• … once major concern are unobserved confounders

• … one major concern is overfitting

• … we primarily care about the predictive ability of the model

• … we primarily care about causal effects

• None of these

True or false? For ordinal scales, the magnitude of difference between scale points is known

• True

• False

For which scale types is it meaningful to compute the mean?

• Ratio

• Nominal

• Interval

• Ordinal

• None