6.2 Representing Data

• A bar chart uses bars of varying heights to show frequencies
• Match the data representation method with its primary use:

  Frequency Table ↔️ Summarizing unordered categorical data

  Bar Chart ↔️ Comparing frequencies of categories

  Pie Chart ↔️ Illustrating proportions
• Categorical data includes examples such as gender or color
• Line graphs are used to show trends or changes in numerical data over time
• Arrange the graph types in order of their suitability for displaying categorical data:

  1️⃣ Frequency Table

  2️⃣ Bar Chart

  3️⃣ Pie Chart
• What are the two main types of data?

  Categorical and Numerical
• What type of visualization uses symbols or icons to represent data?

  Pictograms
• A legend in a pictogram explains what each symbol means


  True
• Pictograms are more precise than other data visualizations.

  False
• What are the two common styles of bar charts?

  Vertical and horizontal
• What are the two main types of data?

  Categorical and numerical
• Which graph type is suitable for both categorical and numerical data?

  Bar chart
• Match the graph type with its best use case:

  Bar Chart ↔️ Comparing frequencies of categories

  Line Graph ↔️ Visualizing trends over time

  Pie Chart ↔️ Illustrating relative proportions
• In a pictogram, the number of symbols represents the value
• Pictograms are suitable for complex data sets.

  False
• Match the component of a pictogram with its description:

  Symbols/Icons ↔️ Simple, recognizable images

  Scale ↔️ Represents the numerical value

  Legend ↔️ Explains symbol meanings
• Match the graph type with the type of data it best represents:

  Bar Chart ↔️ Categorical and Numerical Data

  Line Graph ↔️ Numerical Data

  Pie Chart ↔️ Categorical Data
• Pie charts are ideal for displaying trends in numerical data over time

  False
• Choosing the correct graph type helps communicate data effectively


  True
• Bar charts are used to display frequencies or proportions
• Line graphs are suitable for showing changes in categorical data

  False
• In a pictogram, the scale indicates how many units each symbol represents
• Pictograms use symbols or icons to represent data
• What does the scale in a pictogram represent?

  Data values
• Bar charts use bars of varying heights to represent the frequency or amount of different categories
• In a bar chart, the x-axis labels the categories.


  True
• Choosing the correct graph type is essential for effective data communication.


  True
• Line graphs are ideal for showing trends or changes in numerical data over time
• What is an advantage of using pictograms?

  Visually engaging
• What is one advantage of using pictograms?

  Visually engaging
• Pictograms use symbols or icons to represent data
• What type of data are bar charts commonly used to represent?

  Categorical data
• Bar charts use bars of varying heights to show the frequencies or proportions of different categories
• Match the component of a line graph with its description:

  X-axis ↔️ Represents time

  Y-axis ↔️ Represents numerical values

  Line ↔️ Shows trends in data
• In a pie chart, each sector's size corresponds to its proportion
• Match the component of a histogram with its description:

  Bins ↔️ Ranges of numerical values

  Frequencies ↔️ Number of data points within each bin

  Area ↔️ Represents the proportion of data
• Bins in a histogram typically have equal widths
• To create a histogram, you must first determine the bin width
• Bins in a histogram represent numerical values divided into equal intervals
• What type of data does a bar chart primarily display?

  Categorical data