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Data science with open Data Cognitive class Exam Answers:-

Course Name:- Data Science with Open Data

Module 1:- What is Data Science?

Question1: What is Data Science?

  • It uses less complex statistics and generally tries to identify patterns that can improve an organization.
  • It is a set of instructions we give a computer so it can take values and manipulate them into a usable form.
  • Data science is focused on creating understanding among messy and disparate data.
  • Mathematically, it is the average difference between individual values and the mean for the set of values.
  • This machine learning method uses a line of branching questions or observations about a given data set to predict a target value.

Question 2: The Hadoop Distributed File System (HDFS) allows for storage, retrieval, and analysis of very large data sets using distributed hardware.: True or False. Enter question

  • False
  • True

Question3: Which definition(s) of Open Data are true? Select all that apply.

  • Open Data is defined as structured data that is machine-readable, freely shared, used and built on without restrictions
  • Open Data must be available as a whole and at no more than a reasonable reproduction cost, preferably by downloading over the internet.
  • When using Open Data, there should be no discrimination against fields of endeavor or against persons or groups.
  • Open data must be provided under terms that permit re-use and redistribution including the intermixing with other datasets.
  • Open Data is free for academics only

Module 2 :- Up and Running with R

Question 1: R Studio is an IDE for R. What is an IDE?

  • integrated development enterprise
  • integrated docker environment
  • integrated development environment
  • initiated development environment
  • none of the above

Question 2: In R, the # symbol precedes a comment. True/False

  • False
  • True

Question 3: R is case-sensitive. True/Fals

  • False
  • True

Module 3:- The National Board of Canada (NEB)

Question 1: The Open Data sets used in the labs is from the NEB. What is the NEB?

  • National Electronic Body of Canada
  • National Electronic Bureau of Canada
  • National Energy Board of Canada
  • National Energy Bureau of Canada
  • None of the above

Question 2: ‘Exploring Canada’s Energy Future’ is an interactive tool that allows users to visualize, download, and share the data behind the National Energy Board’s (NEB) series of long-term energy outlooks, Energy Futures.

  • False
  • True

Question 3: The total energy used in the four sectors of Canada’s economy: residential, commercial, industrial and transportation is described in the NEB Open Data set as ________________?

  • Oil Production:
  • Electricity Generation
  • Natural Gas Production
  • Total Demand
  • None of the above

Module 4: -Intro to Data Analysis

Question 1: Analyze the Energy Futures Data Visualizations and derive insights from the data e.g., which of the following statements is true? (View by Region, GW.h, 2018, Scenario – Reference)

  • By 2040, Coal Energy wil be replaced by Hydro and Natural Gas in British Columbia
  • By 2040, Coal Energy will be the second biggest source of Electricity in Ontario
  • By 2040, Coal Energy will be the second biggest source of Electricity in Quebec
  • By 2040, Coal Energy wil be replaced by Solar/Wind/Geothermal and Natural Gas in Alberta
  • By 2040, Coal Energy will be the second biggest source of Electricity in British Columbia

Question 2: Analyze the Energy Futures Data Visualizations and derive insights from the data e.g., The trend for Alberta’s Oil Production declines significantly from 2005-2040, kB/d, 2018, Scenario – Reference. True/False

  • False
  • True

Question3 : A useful way to understand a large data set and distil insights from data visualizations is ___________?

  • A cube approach
  • A curved approach
  • A circular approach
  • An internal approach
  • A Pyramid approach

Module 5 :- Data Visualization and Analysis with Open Data

Question 1: When we explore a data set to find insights, it is useful to use visualizations as human beings are good at _________?

  • looking into the future
  • typing fast
  • detecting large numbers
  • spotting visual differences
  • none of the above

Question 2: Looking at multiple visualizations to find data insights and spot notable differences in different data set. True/False?

  • False
  • True

Question 3: Drilling down into data can help us find data insights. True/False?

  • False
  • True

Data Science with Open Data Cognitive class final exam Answers:-

Question 1: What is Open Data?

  • Open Data is data that is defined as structured but not machine-readable.
  • Open Data is data that may be analyzed computationally to reveal patterns but is never shared.
  • Open Data is defined as structured data that is machine-readable, freely shared, used and built on without restrictions.
  • Open Data is data that does not have a pre-defined data model or is not organized in a pre-defined manner and it is not freely shared.
  • Open Data is data that may be analyzed computationally to reveal patterns and is built with restrictions.

Question 2: RStudio is available as stand-alone software or in the cloud. True or False?

  • False
  • True

Question 3: RStudio is an IDE – IDE stands for?

  • Interactive Decoding Environment
  • Integrated Decoding Environment
  • Interactive Development Environment
  • Intergrated Development Environment
  • None of the above

Question 4 : In this course, we accessed RStudio using RStudio Cloud and IBM’s labs.cognitiveclass.ai. True or False?

  • False
  • True

Question 5 : The National Energy Board of Canada (NEB) regulate: _____________ .

  • The construction and operation of international power lines and designated inter-provincial power lines.
  • Imports of natural gas and exports of crude oil, natural gas liquids, natural gas, refined petroleum products, and electricity.
  • Oil and gas exploration and production activities in specified areas that are not regulated under joint federal/provincial accords.
  • The construction, operation, and abandonment of pipelines that cross international borders or provincial boundaries, as well as the related pipeline tolls and tariffs.

***[Select all that are true]***

  • only
  • and (2) only
  • (1 , (2) and (3) only
  • (1), (2), (3) and (4) are true
  • None of the above are true.

Question 6 : The Minto Pyramid Principle refers to a process for organizing your thinking so that it jumps easily off the page to lodge in a reader’s mind. It notes that people ideally work out their thinking by creating pyramids of ideas. Select the 3 steps invovled in the concept.

  • Grouping together low-level facts they see as similar
  • Numbering the main ideas
  • Listing all the thoughts
  • Drawing an insight from having seen the similarity
  • Forming a new grouping of related insights, etc.

Question 7: R is case sensitive. True or False?

  • False
  • True

Question 8: To run a command in R, place your cursor anywhere on the line you wish to run and hit the ‘tab + enter’ buttons (Windows) or ‘tab + enter’ (Mac) True or False?

  • False
  • True

Question 9 : Which R package can we use to add compelling color schemes to our visualizations?

  • shiny
  • RColorBrewer
  • stringr
  • dyplr
  • None of these packages.

Question 10: We can use the “read.csv” command to load a CSV. file into the R programming environment. True or False?

  • False
  • True

Question 11: Which R command can we use to change the orientation of a chart?

  • coord_flip()
  • ggthemes()
  • stringr()
  • dyplr()
  • None of these packages.

Question 12 : Which R command covered in this course can we use to learn out more about a function?

  • by running the function preceded by ‘/’, e.g., “/subset”
  • by running the function preceded by ‘#’, e.g., “#subset”
  • by running the function preceded by ‘==’, e.g., “==subset”
  • by running the function preceded by ‘?’, e.g., “?subset”
  • None of these commands will provide more information about a function.

Question 13: When you run Rscript for the first time, you will need to install packages – these are predefined groups of code that perform common instructions. The command to install the ‘ggplot2’ package is________________________.

  • packages.install(ggplot2)
  • packages.install.ggplot2
  • install.packages(“ggplot2”)
  • install.packages(ggplot2)
  • None of these packages.

Question 14 : In 2005, Wind is the biggest source of energy for Quebec (QC). True or False?

  • False
  • True

Question 15 : From analyzing the NEB Open Data, we learn that__________________.

  • Over time, Canada expects to replace Hydro with Coal sources of electricity.
  • Over time, Canada expects to replace coal with solarWindGeoThermal sources of electricity.
  • Canada’s electricity will all be imported over time.
  • Canada’s electricity generation is decreasing over time.
  • Over time, Canada expects to replace Hydro with Coal sources of electricity.v

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