a)Under what circumstances is a pie chart appropriate for data visualisation? [3]b)Explain any five (5) design principles for a dashboard [10]c)Describe and explain a line fitted scatter plot and the circumstances that permit such a chart [7]
Question
a)Under what circumstances is a pie chart appropriate for data visualisation? [3]b)Explain any five (5) design principles for a dashboard [10]c)Describe and explain a line fitted scatter plot and the circumstances that permit such a chart [7]
Solution
a) A pie chart is appropriate for data visualization when:
-
The data represents a part of a whole: Pie charts are best used when you want to compare a single category to the total. For example, if you want to show the proportion of each product's sales in a total sales.
-
The categories are mutually exclusive: Each segment of the pie chart should represent a distinct category. There should be no overlap between categories.
-
There are not too many categories: Pie charts can become cluttered and hard to read if there are too many categories. As a rule of thumb, if you have more than five to seven categories, consider using a different type of chart.
b) Five design principles for a dashboard are:
-
Simplicity: The dashboard should be simple and not overloaded with information. It should only contain the most important metrics.
-
Consistency: The design elements should be consistent throughout the dashboard. This includes fonts, colors, and layout.
-
Highlighting important information: The most important information should be highlighted or placed in a prominent position.
-
Use of visual aids: Graphs, charts, and other visual aids should be used to represent data. This makes the data easier to understand.
-
User-friendly: The dashboard should be easy to navigate and understand. Users should be able to find the information they need quickly and easily.
c) A line fitted scatter plot is a type of chart that shows the relationship between two variables. The data is displayed as a collection of points, and a line of best fit is drawn to show the trend in the data.
This type of chart is appropriate when:
-
You have two continuous variables: Scatter plots are used to show the relationship between two continuous variables.
-
You want to show a linear relationship: The line of best fit shows whether the relationship between the variables is positive (both variables increase together), negative (one variable decreases as the other increases), or neutral (no relationship).
-
You want to identify outliers: Outliers are data points that do not fit the general trend of the data. These can be easily identified on a scatter plot.
Similar Questions
Question 1What is a capability of line charts?1 pointCompare different, unrelated data sets Compare different, but related data sets Compare the frequency of data sets Compare similar, unrelated data sets 2.Question 2Each portion of a pie chart represents static values or categories. What is the sum of the categories equal to? 1 point50%100%99% 75%3.Question 3According to the ‘Introduction to Charts’ video, which chart is one of the most commonly used?1 pointBubble chart Funnel chart Bar chart Scatter chart 4.Question 4In the ‘Expert Viewpoints: Using Visualizations to Tell a Data Story’ video, one expert mentioned two software programs that help highlight the important information. Which were the two software programs? 1 pointPowerPoint and Excel Google and Bing Google Docs and Word Db2 and SQL 5.Question 5In the ‘Creating Basic Charts in Excel’ video, which type of chart shows the relative contribution of unit sales from Ford car models? 1 pointPie chart Line chart Funnel chart Bar chart 6.Question 6How does a pivot chart differ from a standard chart in Excel? 1 pointA pivot chart contains data series, categories, and chart axes A pivot chart cannot be a line, pie or bar chart A pivot chart uses data from a pivot table A pivot chart always has its data arranged in columns and rows 7.Question 7What is the main difference between Area and Column charts? 1 pointA column chart uses vertical bars, and an area chart uses data points An area chart uses horizontal bars, and a column chart uses rows A column chart uses data points, and an area chart uses vertical bars An area chart makes sense of complicated data and a column chart shows chart axis like basic charts
When should you avoid using a pie chart for data visualization?When comparing expenses across different categories.When highlighting the breakdown of spending proportions within a category.When you need to emphasize the importance of a specific category.When there are only a few categories to represent.
Data visualization professions highly recommend the use of pie charts in making presentations because they are useful in comparing relative sizes of areas. Group of answer choicesTrueFalse
Fill in the blank: Pie charts use _____ to combine the individual parts in a visualization and display them together as a whole, which can help reveal patterns and trends not visible in the original datasets.1 pointdata compositionsizingpatternscolor shading
What are pie charts best used for? Charting pies. Showing changes in data over time. Comparing categories as parts of the total data. Comparing large amounts of categories.
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.