Test yourself with the skills you have acquired so far
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:
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:
Chi-square
Snedecor’s F
Student’s t
Which of the following most closely describes the machine learning approach to completing a task?
Keep trying at random until successful
Follow step-by-step instructions
Detect a pattern from historical data or previous trials and apply it
Which algorithm assumes that input features are mutually independent?
Decision Trees
NaĂŻve Bayes
Neural Networks
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?
4 partitions; 5 trainings
5 partitions; 6 trainings
5 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?
Transparency
Reproducibility
Robustness
The Equalized Odds fairness metric requires that
All of the above
TPR is the same for all demographic groups
FPR is the same for all demographic groups
Typical text mining tasks include:
Modeling entity relation
Text clustering
Text categorization
All of the above
Is stemming the process of separating the prefixes and suffixes from words to derive the root word form and meaning?
True and False
True
False
Which one of the following word embeddings can be custom trained for a specific subject in NLP?
Word2Vec
BERT
All the above
GloVe