Types of Variables in Research
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Questions and Answers

Which type of variable represents values with numbers?

  • Qualitative data
  • Numerical variable (correct)
  • Qualitative variable
  • Categorical variable

What type of data is subjective and helps to understand experiences in depth?

  • Numerical data
  • Quantitative data
  • Qualitative data (correct)
  • Primary data

Which type of data can be classified into primary and secondary sources?

  • Quantitative data (correct)
  • Numerical data
  • Categorical data
  • Qualitative data

If you are recording the number of items sold per month, what type of variable is this?

<p>Numerical variable (D)</p> Signup and view all the answers

What are data footprints in the context of the text?

<p>Trails of data created by our online activities (B)</p> Signup and view all the answers

How are data footprints compared to physical footprints?

<p>Data footprints are like moving around on sand, while physical footprints are made on hard surfaces (C)</p> Signup and view all the answers

What is an example of an active data footprint according to the text?

<p>Sharing images or content on social media platforms (B)</p> Signup and view all the answers

How does the text describe passive data footprints?

<p>Browsing history and product searches stored by search engines (C)</p> Signup and view all the answers

What type of food is most preferred according to the graph?

<p>Pizza (B)</p> Signup and view all the answers

Which food item has more students disliking it than liking it?

<p>Noodles (D)</p> Signup and view all the answers

Which food item is implied to be the least popular in the class?

<p>Sandwich (C)</p> Signup and view all the answers

What does the text imply about scaling up the results to other grades?

<p>Class findings might represent other classes in the grade level (A)</p> Signup and view all the answers

What is the purpose of data collection in data science?

<p>To gather data for analysis and deriving insights (C)</p> Signup and view all the answers

Why is data collection considered a primary step in most cases?

<p>As it provides the foundation for reliable insights (C)</p> Signup and view all the answers

How is the approach to data collection described in the text?

<p>It varies based on the type of data being collected and the field of study (B)</p> Signup and view all the answers

What is a variable in the context of data science?

<p>An attribute of an object that may vary for different cases (A)</p> Signup and view all the answers

Which type of distribution is represented by a histogram with a shape that is skewed to the right?

<p>Right-skewed Distribution (B)</p> Signup and view all the answers

What is the graphical representation suitable for finding the mode?

<p>Pie Chart (A)</p> Signup and view all the answers

Which graph/chart is one-dimensional in nature?

<p>Pie Chart (D)</p> Signup and view all the answers

Can a Line chart be used to plot multiple variables?

<p>No (A)</p> Signup and view all the answers

Flashcards

Numerical Variable

A variable that represents values as numbers.

Qualitative Data

Data that describes qualities or characteristics, typically subjective and in-depth.

Quantitative Data

Data that can be measured and expressed numerically, categorized as primary or secondary.

Data Footprints

Trails of data created by online activity.

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Active Data Footprint

Data footprints created by actively sharing online content.

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Passive Data Footprint

Data footprints created by passively browsing or interacting with online services.

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Most Preferred Food

The food item liked by the most students in the class.

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Least Liked Food

The food item disliked by more students than liked.

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Variable (in Data Science)

An attribute of an object that can take on different values for different cases.

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Right-Skewed Distribution

A distribution where the tail extends to the right, with most values clustered on the left.

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Pie Chart

A circular chart divided into sections to represent proportions of data.

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One-Dimensional Graph

A graph that uses only one position value (like a line chart or a bar chart measuring only 1 quantity/dimension)

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Line Chart Usable for Multiple Variables

No, a line chart usually plots a single variable against another, making it unsuitable for showing multiple variables on the same graph.

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Data Collection Purpose

Gathering data for analysis and insights to understand complex problems and develop solutions.

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