L1: What does Data Scientis do?

Question 1

Comma-separated values (CSV) / Tab-separated values (TSV)

Answer 1

Commonly used format for storing tabular data as plain text where either the comma or the tab separates each value.

Question 2

Data file types

Answer 2

A computer file configuration is designed to store data in a specific way.

Question 3

Data format

Answer 3

How data is encoded so it can be stored within a data file type.

Question 4

Data visualization

Answer 4

A visual way, such as a graph, of representing data in a readily understandable way makes it easier to see trends in the data.

Question 5

Delimited text file

Answer 5

A plain text file where a specific character separates the data values.

Question 6

Extensible Markup Language (XML)

Answer 6

A language designed to structure, store, and enable data exchange between various technologies.

Question 7

Hadoop

Answer 7

An open-source framework designed to store and process large datasets across clusters of computers.

Question 8

JavaScript Object Notation (JSON)

Answer 8

A data format compatible with various programming languages for two applications to exchange structured data.

Question 9

Jupyter notebooks

Answer 9

A computational environment that allows users to create and share documents containing code, equations, visualizations, and explanatory text. See Python notebooks.

Question 10

Nearest neighbor

Answer 10

A machine learning algorithm that predicts a target variable based on its similarity to other values in the dataset.

Question 11

Neural networks

Answer 11

A computational model used in deep learning that mimics the structure and functioning of the human brain’s neural pathways. It takes an input, processes it using previous learning, and produces an output.

Question 12

Pandas

Answer 12

An open-source Python library that provides tools for working with structured data is often used for data manipulation and analysis.

Question 13

Python notebooks

Answer 13

Also known as a “Jupyter” notebook, this computational environment allows users to create and share documents containing code, equations, visualizations, and explanatory text.

Question 14

R

Answer 14

An open-source programming language used for statistical computing, data analysis, and data visualization.

Question 15

Recommendation engine

Answer 15

A computer program that analyzes user input, such as behaviors or preferences, and makes personalized recommendations based on that analysis.

Question 16

Regression

Answer 16

A statistical model that shows a relationship between one or more predictor variables with a response variable.

Question 17

Tabular data

Answer 17

Data that is organized into rows and columns.

Question 18

XLSX

Answer 18

The Microsoft Excel spreadsheet file format.