In one-factor ANOVA, the residuals:

Are assumed to be normal

We do not need any assumptions on the residuals

Are assumed to be correlated

The null hypothesis in a one-factor ANOVA states that:

There are only two means that are the same

All the means are different

All the means are the same across levels

The two-factor ANOVA statistic to test for the significance of factor 𝜶 has a distribution:

Student’s t

Snedecor’s F

Chi-square

Which of the following most closely describes the machine learning approach to completing a task?

Detect a pattern from historical data or previous trials and apply it

Follow step-by-step instructions

Keep trying at random until successful

Which algorithm assumes that input features are mutually independent?

Neural Networks

Decision Trees

Naïve Bayes

How many partitions is your training dataset divided into in a 5-fold CV? And how many times does the algorithm get trained in total?

5 partitions; 5 trainings

5 partitions; 6 trainings

4 partitions; 5 trainings

Name three different examples of using data science for good

skills matching

monitoring social media for human rights impacts

adaptive charging

Which of the following is not one of the principles of trustworthy AI?

Robustness

Reproducibility

Transparency

The Equalized Odds fairness metric requires that

TPR is the same for all demographic groups

FPR is the same for all demographic groups

All of the above

Typical text mining tasks include:

Text clustering

Text categorization

Modeling entity relation

All of the above

Is stemming the process of separating the prefixes and suffixes from words to derive the root word form and meaning?

False

True

True and False

Which one of the following word embeddings can be custom trained for a specific subject in NLP?

All the above

GloVe

Word2Vec

BERT