Data Graphs

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A segmented bar graph is similar to regular bar graph except the bars are made of different segments that are represented visually through colored sections. A segmented bar graph is sometimes known as a stacked bar graph, and it offers greater detail about data sets.

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  • What is numerical data?

    Q: What is numerical data?

    A: Numerical data is data that is expressed with digits as opposed to letters or words. For example, the weight of a desk or the height of a building is numerical data.
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  • What is a segmented bar graph?

    Q: What is a segmented bar graph?

    A: A segmented bar graph is similar to regular bar graph except the bars are made of different segments that are represented visually through colored sections. A segmented bar graph is sometimes known as a stacked bar graph, and it offers greater detail about data sets.
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  • What are the advantages and disadvantages of a graph?

    Q: What are the advantages and disadvantages of a graph?

    A: The primary advantage of using a graph or chart in a presentation is that they help the audience to visualize the point of the presentation. Graphs emphasize the main point, make the data more convincing, provide a compact way of presenting information and help audiences stay engaged. Disadvantages of graphs include being time consuming to construct and costly to produce. They also require technology that some may lack.
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  • What are the names of graphs?

    Q: What are the names of graphs?

    A: Several types of graphs are used for displaying information in mathematics including the bar graph; pie chart or circle graph; histogram; stem and leaf plot; dot plot; scatter plot; and time-series graphs. The type of graph chosen depends on whether the data is quantitative, qualitative or paired.
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  • How is data turned into information?

    Q: How is data turned into information?

    A: According to the BBC, data is transformed into information after being imported into a database or spreadsheet. Information is defined as a collection of facts or data, whereas data is defined as information organized for analysis or used to reason.
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  • How is a tally chart made?

    Q: How is a tally chart made?

    A: To make a tally chart, single lines are drawn next to one another until reaching five, where the fifth line crosses the four other lines diagonally. This is a simple charting method that can be used quickly for surveys or other needs.
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  • When do you use a bar graph?

    Q: When do you use a bar graph?

    A: A bar graph is used to compare items between different groups and track changes over a period of time. Bar graphs are best used for changes that happen over a large amount of time instead of just months or weeks.
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  • What is a pie graph used for?

    Q: What is a pie graph used for?

    A: A pie graph is an effective visual tool used for showing how something breaks into parts. A pie graph is essentially a circle sliced into 100 pieces. Each category or part represented in the pie graph is given a piece of the pie to represent the percentage that it comprises of the whole.
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  • Why are points connected in a line graph but not in a bar graph?

    Q: Why are points connected in a line graph but not in a bar graph?

    A: A line graph is a graph that charts the relationship between two variables or a progression of a single quantity through time. Without the lines connecting points of data, it would be difficult to make sense of the data being presented if there was no overall trend between the dots. A bar graph, on the other hand, is meant to compare two or more statistics, such as population figures.
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  • Why are graphs important?

    Q: Why are graphs important?

    A: Graphs are beneficial because they summarize and display information in a manner that is easy for most people to comprehend. Graphs are used in many academic disciplines, including math, hard sciences and social sciences. They make appearances in corporate settings, serving as useful tools to convey financial information and facilitate data analysis.
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  • How does a graph help people interpret scientific data?

    Q: How does a graph help people interpret scientific data?

    A: Graphs of various types provide convenient visual representations of scientific data that would otherwise be presented in intimidating blocks of text or a series of numbers. Graphs represent statistics such as changes over time, comparisons, or parts of a whole. Graphs can be used to make date more accessible to both scientists and laypersons.
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  • Q: What are the different sizes of free printable graph paper?

    A: Printable graph paper is available in a variety of sizes and formats, including standard 1/4-inch graphs, numbered grid paper with 10 lines per inch and trigonometric graphs labeled in radians. Exact availability depends upon the website. For example, PrintFreeGraphPaper.com offers a simple-to-use selection tool to download isometric, hexagonal and engineering graph papers in PDF formats, as well as standard Cartesian graph paper and logarithmic, polar and Smith chart paper.
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  • Q: What is a linear relationship in math?

    A: A linear relationship in mathematics is one in which the graphing of a data set results in a straight line. The formula y = mx+b is used to represent a linear relationship. In this formula m is the slope of the line, and b is the X-intercept. The graph of distance traveled versus time, at a constant speed, is a linear relationship.
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  • Q: How do you use decision tree analysis?

    A: Decision-tree analysis is used by evaluating alternatives presented in a graphical format. Decision trees feature a tree-like graph that represents the statistical probabilities, uncertainties, resource costs, potential courses of action and possible consequences faced by a decision maker. They are used to help find answers to complex problems.
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  • What are the percentages of different eye colors?

    Q: What are the percentages of different eye colors?

    A: The percentages of people with various eye colors are unknown for many countries. However, according to the American Academy of Ophthalmology, 32 percent of Americans have blue or grey eyes; 15 percent have blue, grey or green eyes with brown or yellow flecks; 12 percent have green or light brown eyes with minimal flecks; 16 percent have brown eyes with dark specks; and 25 percent have uniformly brown eyes.
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  • Q: What is a line graph?

    A: A line graph connects points of data with line segments. Line graphs represent how data changes in value over time or some other form of measurement.
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  • Q: How are graphs used in the real world?

    A: In the real world, graphs are used to help people quickly understand and use information. Examples include graphs used in medicine and in business.
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  • Q: What are density-dependent factors?

    A: A density-dependent factor is a limiting factor that depends on the population size. These factors are only effective when the population reaches a certain density. Examples of density-dependent factors include competition, parasitism, disease and predation.
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  • What is the slope-intercept method?

    Q: What is the slope-intercept method?

    A: The slope-intercept method allows linear equations in algebra to be solved and graphed when given the slope of a line and the y-intercept. It is expressed in the form y = mx + b, where x and y are an ordered pair, m is the slope of the line expressed as a ratio, and b is the y-intercept.
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  • Q: Purpose of graphical presentation of data?

    A: The purpose of graphical presentation of data is to provide a quick and easy-to-read picture of information that clearly shows what otherwise takes a great deal of explanation. The impact of graphical data is typically more pointed and memorable than paragraphs of written information.
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  • Q: What is an accurate Math input output table?

    A: An accurate Math input output table consists of ordered pairs that correctly follow a specific rule. It is also known as a function table. People can determine missing values in the table by identifying the number pattern using the values given.
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