Graph Types and Their Uses

The video tutorial explains how to choose appropriate graphs and charts for data display. It covers various types of graphs, including dot plots, stem and leaf plots, histograms, bar graphs, pie charts, and line graphs. Each type is explained in terms of its suitability for different data types and purposes, such as showing individual data points, distributions, frequencies, categorical comparisons, part-to-whole relationships, and trends over time.

What are the two main questions to consider when choosing a graph or chart?

• Is the data numerical or categorical and is it continuous?

• What type of data do we have and what do we want to show?

• What is the color of the data and how often is it updated?

• How many data points are there and what is the data range?

Which type of data is best represented by a dot plot?

• Large categorical data sets

• Data with many subcategories

• Small numerical data sets

• Continuous data over time

What is a limitation of using a dot plot?

• It is not suitable for large data sets

• It does not show distribution

• It is only for categorical data

• It cannot show individual data points

How does a stem and leaf plot differ from a dot plot?

• It is suitable for large data sets

• It shows distribution more clearly

• It is used for categorical data

• It does not show individual data points

What is the main advantage of a stem and leaf plot?

• It is suitable for categorical data

• It is used for continuous data

• It shows the distribution of data

• It is easy to create for large data sets

What type of data is best represented by a histogram?

• Data with many subcategories

• Small numerical data sets

• Large numerical data sets

• Categorical data

What is a key feature of a histogram?

• Bars touch and show frequency

• Bars do not touch

• Used for categorical data

• Shows individual data points

What type of data is best represented by a bar graph?

• Categorical data

• Data with a large range

• Numerical data

• Continuous data

How do bar graphs differ from histograms?

• Bar graphs are for numerical data

• Bar graphs show frequency

• Bars touch in bar graphs

• Bars do not touch in bar graphs

What is a pie chart also known as?

• Histogram

• Bar graph

• Circle graph

• Line graph