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## Data Science MCQ

Data Science is a very hot topic these days. If you are looking MCQs on Data Science, then you are on the right place.

20 Data science MCQs are provided below. If you want Data Science multiple choice questions and answers pdf, comment below.

A method used to make vector of repeated values?

- read()
- rep()
**data()**- view()

To find the maximum number in the Numpy array, we use?

- max(array)
**array.max()**- array(max)
- None of the above

Correct way to install Numpy is

- import numpy
**import numpy as np**- from numpy import

Deep learning algorithms are constructed with how many layers?

- 1
- 2
**3**- 4

Converting the Numpy array to the list in python requires

- list.array
- array.list
**list(array)**- None of the above

Index values in Pandas must be?

- Hashable
- Unique
**Both Unique and Hashable**- None of the above

Which role do internet technologies and the “IoT” play in the context of industry 4.0?

**They form the base for an environmental friendly production.**- form among others the base for corporate communication
- They form the base to connect everyday items.
- All of the above

A matplotlib function used to create a line chart is

- line
- graph
- bar
**plot**

Which industry branches are suitable for industry 4.0 development?

- Industry 4.0 is in first instance an enrichment for the service industry.
- Especially in the automotive and agricultural sector
**Industry 4.0 can be used in all industrial contexts where processes need to be more intelligent.**- All of the above

Which of the following is correct skills for a Data Scientist?

- Probability & Statistics
- Data Engineering
- Machine Learning / Deep Learning
**All of the above**

A python package used for 2D graphics is

- matplotlib.plt
**matplotlib.pyplot**- matplotlib.numpy
- matplotlib.pip

What will be the output of the following code?

- 0
**1**- 3
- None of the above

A series is a one-dimensional array which is labelled and can hold any data type.

**True**- False

What will be the output of the following program?

- 2
**3**- 1
- 4

A correct way to preprocess the data When performing regression or classification is

- None of the above
**Normalize the data → PCA → training**- Normalize the data → PCA → normalize PCA output → training
- PCA → normalize PCA output → training

Size attribute in Numpy array in python is used for

- finding the direction
**finding the number of items**- finding the shape
- All of the above

How many types of Artificial Neural Network topologies do we have

- 3
**2**- 4
- 1

Supervised learning differs from unsupervised clustering in that supervised learning requires

**input attributes to be categorical.**- ouput attriubutes to be categorical.
- at least one output attribute.
- at least one input attribute.

Following options can be used to create a DataFrame in Pandas?

**All**- A scalar value
- A python dict
- An ndarray

CNN is mostly used for which type of data

- Both Structured and Unstructured
- None of the above
- Structured Data
**Unstructured Data**