QUESTION 11

In a version control system, when changes overlap and contradict, the VCS may report a conflict and not let you check in until the conflict is resolved.

A.

TRUE

B.

FALSE

10 points

QUESTION 12

Which of the following variable names are acceptable, according to the R Coding Style? (the numbers and the dot are not part of the names. i.e. for the first choice the variable name is Size_of_the_queue, not 1. Size_of_the_queue)

1. Size_of_the_queue

2. QS

3. queue_size

A.

1

B.

1 and 2

C.

3

D.

1, 2 and 3

10 points

QUESTION 13

Which of the following statement is incorrect?

A.

According to Bertins Image Theory, we can only perceive 3 variables (2 planar and 1 retinal) efficiently

B.

It is not a good idea to separate different levels of categorical data using different colors.

C.

size is an acceptable visualizer for the quantitative data.

D.

When using bar plots, the y-axis must start at 0 to support comparing values, otherwise the plot can be

misleading.

10 points

QUESTION 14

Which of the following statements is correct about the The No Free Lunch Theorem?

1. The theorem says that the assumptions made by machine-learning algorithms mean that some algorithms will fit certain data sets better than others

2. The No Free Lunch theorem can help us choose the best algorithm for a given dataset

3. The theorem states that there is no super algorithm that will work perfectly for all datasets

A.

1

B.

1 and 2

C.

1 and 3

D.

1,2, and 3

10 points

QUESTION 15

Which of the following statements is NOT correct?

A.

Integrating the textual statements with the codes and results can significantly enhance the readability of the analysis.

B.

The results can never be reproduced if the analysis requires random numbers

C.

In order to exactly reproduce a given result, it may be necessary to use programs in the exact versions used originally.

D.

Manual data manipulations can make it more difficult to have a reproducible analysis

10 points

QUESTION 16

Which of the following is NOT considered as an element or goal of your presentation to the sponsor of your analytics project?

A.

Presenting the projects key results

B.

Summarizing the motivation behind the project, and its goals.

C.

Discussing the engineering details of the project

D.

Discuss recommendations and outstanding issues

10 points

QUESTION 17

Models Interpretability can enhance __________

A.

Trust in the model

B.

Understanding causal relationships

C.

Making fair and ethical decisions

D.

All of the above

10 points

QUESTION 18

Making sure that the analysis and our model building process is reproducible can help by__________

1.

Saving time & efforts

2.

Reducing the risk of errors

3.

Facilitating collaboration

4.

All of the above

10 points

QUESTION 19

Which of the following statement is INCORRECT regarding version control systems?

A.

When we branch, we create a separate copy of a file/folder for private use (e.g., bug fixing, testing, etc.)

B.

Revert will throw away your local changes and reload the latest version from the repository.

C.

Using Check out we can upload a file to the repository (if it has changed). The file gets a new revision number.

D.

Changelog is simply a list of changes made to a file since it was created.

10 points

QUESTION 20

All models have at least one hyper-parameter that needs to be set by the modeler.

A.

TRUE

B.

FALSE