In one-factor ANOVA, the residuals:

We do not need any assumptions on the residuals

Are assumed to be correlated

Are assumed to be normal

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

All the means are different

There are only two means that are the same

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?

Keep trying at random until successful

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

Follow step-by-step instructions

Which algorithm assumes that input features are mutually independent?

Decision Trees

Neural Networks

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

4 partitions; 5 trainings

5 partitions; 6 trainings

Name three different examples of using data science for good

adaptive charging

skills matching

monitoring social media for human rights impacts

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

Transparency

Reproducibility

Robustness

The Equalized Odds fairness metric requires that

TPR is the same for all demographic groups

All of the above

FPR is the same for all demographic groups

Typical text mining tasks include:

Modeling entity relation

Text clustering

All of the above

Text categorization

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

True

True and False

False

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

Word2Vec

BERT

GloVe

All the above