Data Graphs

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.

See Full Answer
Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • Q: What is the constant rate of change?

    A: The constant rate of change is a predictable rate at which a given variable alters over a certain period of time. For example, if a car gains 5 miles per hour every 10 seconds, then "5 miles per hour per 10 seconds" would be the constant rate of change.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • Q: What does the slope of the budget line represent?

    A: The slope of the budget line represents the amount of good "y" the consumer must give up to purchase one more unit of a good "x." The budget line itself represents the number of good bundles a consumer can buy with limited income.
    See Full Answer
    Filed Under:
  • Q: What are some examples of correlation coefficients?

    A: Some examples of correlation coefficients are the relationships between deer hunters and deer in a region, the correlation between the distance a golf ball travels and the amount of force striking it and the relationship between a Fahrenheit and a Celsius temperature value. Correlation coefficients are measured within the range of -1 and 1. A stronger absolute value indicates a stronger linear relationship between the two variables.
    See Full Answer
    Filed Under:
  • Q: What is a stem and leaf plot with decimals?

    A: A stem and leaf plot with decimals is an organized representation of the frequency with which certain numbers containing decimals occur in a set of data. Stem and leaf plots can be applied in a number of different fields for bookkeeping and to help keep sets of information analyzed. There are also forms of stem and leaf plots that are charted the same way, but do not use decimals.
    See Full Answer
    Filed Under:
  • 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.
    See Full Answer
    Filed Under:
  • What is a broken axis graph?

    Q: What is a broken axis graph?

    A: A broken axis graph is one in which part of the scale on the x or y axis has been omitted to save space. The broken axis graph has a wavy line at the location where the scale is broken.
    See Full Answer
    Filed Under:
  • Q: What distinguishes a histogram from a bar chart?

    A: Histograms and bar charts are different in several ways, but a major distinction is that the bars in histograms represent ranges of data, while the bars in bar charts represent categories. For example, a histogram might plot the percentage of visitors that went to a museum in 10-, 20- or 30-minute ranges. A bar chart might plot the number of visitors per category, such as the different museum exhibits.
    See Full Answer
    Filed Under:
  • Q: How do you make a schedule?

    A: Schedules of all kinds can help you lay out useful information in an organized way so that it's easier to find later. Many schedules are created according to times or days, but schedules also can be used to plot a series of steps or to track the coordinates of a graph in math.
    See Full Answer
    Filed Under: