Data Graphs

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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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  • 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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  • 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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  • 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 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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  • 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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  • 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 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 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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  • 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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  • 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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  • 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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  • What is an entity relationship diagram?

    Q: What is an entity relationship diagram?

    A: An entity relationship diagram or model describes how sets of entities, such as computer processes or organizational roles, interact with each other. An ER model can also list attributes for a particular entity. The most common shape for an entity is a rectangle, while interactions or actions are diamonds, and attributes are ovals. The three main types of ER diagrams are physical data, logical data and conceptual data models.
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  • What are vertices in math?

    Q: What are vertices in math?

    A: Vertices are the points, or corners, in geometrical and mathematical shapes where two or more lines meet but do not cross, according to Math Open Reference. Vertices can exist in two-dimensional and three-dimensional shapes. The singular form of vertices is vertex. Sometimes, the term vertex is also used to describe certain points on quadratic equations.
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  • Q: Why is one column in a hundredths grid equal to one column in a tenths grid?

    A: One column in a hundredths grid is equal to one column in a tenths grid because in each case, the selected column composes one-tenth of the grid in total. The number of blocks is different, but the proportion of space filled is the same.
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  • Q: How do you make a pie chart?

    A: To make a pie chart, organize the data as fractions of the whole. Multiply each fraction by 360 degrees, which is the number of degrees in a circle, and assign each multiplied fraction a portion of the pie chart.
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  • Q: What are printable bar graphs useful for?

    A: Bar graphs, or bar charts, are a way of representing data visually; printable bar charts enable people giving presentations to convey digital information on paper. They are similar to line charts but are often used to show discrete components instead of how something changes over time.
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  • Q: Is there such thing as an online graphing calculator?

    A: Desmos.com provides an online graphing calculator. It runs entirely in the browser without the need to download anything and has all the essential features of a graphing calculator.
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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: How do you plot a Beer's Law graph?

    A: To plot a Beer's Law graph, calculate the absorbance and concentration of the radiation being measured. Mark these on the graph, and draw a line corresponding to the standard plot points.
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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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  • What are math facts for kids?

    Q: What are math facts for kids?

    A: Math facts, or math fluency facts, are the basic rules of calculation that enable elementary school students to solve common math problems. An understanding of these basic rules and facts is required to perform common fifth-grade level math calculations. An elementary school student's proficiency in solving math problems at their educational level is relative to how well they can accurately and quickly recall and apply basic multiplication, division, addition and subtraction facts.
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