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Data Sciences MCQs with Answers

Exciting News for Aspiring ICTO Candidates: Prepare for Pakistan Army, Navy, and PAF Information Technology Branch Exams with Top-Rated Data Sciences and Computer Questions!

We understand the importance of thorough preparation, and to support your journey towards a successful career in the armed forces’ IT sector, we have compiled a tailored set of questions that cover key aspects of data sciences and computer sciences. These questions are designed to align with the requirements of the ICTO exams, ensuring that you are well-equipped with the knowledge and skills necessary to excel in the selection process.

Free Online Data Sciences MCQs

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Data Sciences Quiz

Data.table written on java :-

True

False

Which of the following inequality is useful for interpreting variances ;-

Testory

Chebyshev

Stautaory

Which is R interface to google charts ;-

googleDataVis

googleChart

googleVis

To find the maximum number in the Numpy array , we use ;-

array. max()

max (array)

array()

Graphically representation of the relationship between the entities are ;

E R diagram

Use case

Flow chart

Which is required for not echoing the code ;-

echo=true

none of them

print = true

Shiny is invented by R folks ;-

True

False

Which numpy operation are correct ;-

Operations related to linear algebra

Mathematical and Logical operations on arrays

all of them

gvisAnnotatedTimeLine returns list of class"gvis and "list':-

False

True

Hierarchical clustering should be mainly used for exploration:-

False

True

Among the following SGD variant , which is based on both Momentum and adaptive learning :-

Nesterov

Adam

RMSprop

Which of the following operations are supported on Time Frames :-

ixmax

idxmax

ixmin

Which indexing capabilities is used as a concise means of selecting data from a pandas object ;-

ipy

Statsmodel provides powerful statistics , analysis and modeling functionaly that is out of pandas's scope ;-

False

True

The diamond shape is represented in an E-R diagram :-

relationship

classes

entity

Select the term which is use to get data fromuser ;-

Form

Pages

Query

Which can be useful for diagnosing data entry errors ;-

hat values

resid

dffit

Which is an example of raw data ;-

All of them

Initial time series file of temperature values

Original swath files generated from a sonar system

Which object has a method cov to compute covariance between series ;-

Panel

Series

Data frame

Which is used to declare the schema of our data either in a ____________ file ;-

JSON

SQL

Which is a correct skills for a Data Scientist ;-

Machine learning

All of them

probability and Statistics

Which programming language is commonly used for data science tasks ;-

Python

C++

Java

There are three types of random variables ;-

False

True

This is not the example of an action query ;-

update

select

modify

Many language C and Java included ,pass all parameters using :-

call be reference

Return by value

call by value

Your score is

Data Sciences Jobs MCQs with Answers

By utilizing these resources, you will not only strengthen your understanding of data sciences but also sharpen your grasp on computer-related concepts, giving you a competitive edge during the examination. We believe that a strong foundation in these areas will not only contribute to your success in the exams but will also prepare you for the challenges and responsibilities that come with a career in Information Technology within the armed forces.

What is the primary goal of data preprocessing in data science?
- A. Data visualization
- B. Data cleaning
- C. Model training
- D. Feature extraction
Correct Answer: B. Data cleaning
In machine learning, what does the term “overfitting” refer to?
- A. Model fitting the training data well but failing on new data
- B. Model generalizing well to new data
- C. Model underperforming on both training and new data
- D. Model having an optimal fit on the training data
Correct Answer: A. Model fitting the training data well but failing on new data
Which statistical measure provides a central tendency of a dataset?
- A. Standard deviation
- B. Median
- C. Range
- D. Variance
Correct Answer: B. Median
What is the purpose of the k-nearest neighbors (KNN) algorithm?
- A. Classification
- B. Regression
- C. Clustering
- D. Feature scaling
Correct Answer: A. Classification
Which data type is used to represent categorical variables in Pandas?
- A. Float
- B. String
- C. Object
- D. Int
Correct Answer: C. Object
What does the acronym SQL stand for in the context of databases?
- A. Structured Question Language
- B. System Query Language
- C. Standardized Query Language
- D. Structured Query Language
Correct Answer: D. Structured Query Language
Which of the following is a supervised learning algorithm?
- A. K-means clustering
- B. Decision tree
- C. Apriori algorithm
- D. Principal Component Analysis (PCA)
Correct Answer: B. Decision tree
What is the purpose of the term “bagging” in ensemble learning?
- A. Boosting the model performance
- B. Reducing model complexity
- C. Training multiple models independently
- D. Feature selection
Correct Answer: C. Training multiple models independently
What is the main advantage of using a NoSQL database over a traditional relational database?
- A. ACID compliance
- B. Schema flexibility
- C. Strict consistency
- D. Tabular data representation
Correct Answer: B. Schema flexibility
In a confusion matrix, what does the term “precision” measure?