Data Graphs

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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 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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  • 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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  • 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 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 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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  • 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 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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  • 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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  • 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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  • 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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  • Q: What is a cumulative frequency polygon?

    A: A cumulative frequency polygon is a plot of the cumulative frequency against the upper class boundary with the points joined by a line segment. An ogive is any continuous cumulative frequency curve, including cumulative frequency polygons. A cumulative frequency polygon displays cumulative frequency on the x-axis and class marks on the y-axis.
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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 is rate of change?

    A: The rate of change, also known as the slope of a line, is a measure of how fast the line changes in the vertical direction compared to the horizontal direction. Typically, the vertical axis is the y-axis, and the horizontal axis is the x-axis.
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  • Q: What is interactive graph paper?

    A: The term interactive graph paper refers to digital graphs available on the Internet or in software that allow the user to draw graphs by hand or input functions with which a program draws the graph. Interactive graph paper is a useful tool in education for classroom lectures.
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  • Q: What is a plot relationship chart?

    A: A plot relationship chart is a chart that helps students focus on problems and solutions in a story. It helps students to comprehend the relationships among characters, their goals, the problems that they faced, the reasons why certain events happened and solutions to their problems.
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  • How does a grading curve work?

    Q: How does a grading curve work?

    A: The purpose of a grading curve is to establish criteria for determining letter grades in an academic environment. Regardless of actual test scores, a few students receive high grades and the remaining students receive average to below-average grades.
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  • Why are graphs useful?

    Q: Why are graphs useful?

    A: Graphs provide a means of displaying statistical information in a meaningful way. They allow for concise viewing of statistical data, especially when that data involves data sets numbering in the hundreds or more.
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  • Q: How do you graph an equation?

    A: To graph a math equation, acquire some graphing paper, draw x and y axes, and decide whether the equation is linear or non-linear. Approach the problem by finding the slope of the linear equation or using a table for a non-linear one.
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  • Q: What is a roster form?

    A: In the branch of mathematics known as set theory, roster form is when a group of set members is placed between brackets, with the individual elements separated by commas. For instance, {2, 4, 6, 8} is the proper form for the roster of even numerals between 0 and 10.
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  • Q: What is a right Riemann sum?

    A: A Right Riemann Sum estimates the right endpoint of the curve on a graph. According to Math Open Reference, a Riemann Sum is a method for estimating the total area underneath a curve on a graph, otherwise known as an integral.
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