EAE_DataScience_S2

EAE_DataScience_S2

Professional Development

10 Qs

quiz-placeholder

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EAE_DataScience_S2

EAE_DataScience_S2

Assessment

Quiz

Computers

Professional Development

Practice Problem

Hard

Created by

Marta Tolós Rigueiro

Used 4+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which is the most typical error when integration data from different sources?

Merge records that are different

Create new data

Keep duplicated records

Remove outliers

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which is the most used visualization techniques when performing exploratory analysis?

Scatterplots

Historgrams

Box Plots

All previous ones

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What type of correlation can be seen in the following scatterplot?

No correlation

Perfect positive correlation

Perfect negative correlation

Strong negative correlation

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which step is typical from a Data cleaning phase?

Feature engineering

Outliers analysis

Discretization

Dimensionality reduction

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What type of atribute can contain the following values?

Numerical

Ordinal

Nominal

None of the previous ones

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which of the following items is not a method to deal with missing values?

Predict a value

Filter an instance

PCA

Discretize

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the problem that can arise if you want to take into account all possible features?

The curse of dimensionality

Not achieving a convergence

Creating redundant data

Losing data

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