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Graphs

Graphs often collect a set of data in a group of people. There are many kinds of graphs: pie charts (circle charts), bar graphs, line graphs, data tables, pictographs, flow charts, histograms, etc.

2,316 Questions

Why are data tables a good way for an investigator to present data for interpretation?

well in the siencetific setps you have data that's were you do the expererment and you colect the information and something's like when your doing a basket ball experement youl have a data chart

What might a graph show that a data table does not?

The graph could go on forever while a data table only shows a part of the graph.

What data is shown in a pie chart?

Any numerical data showing percentage (share) of different elements (segments) of a whole (the disk - the pie). For example, the pie can have three slices of different sizes with respect to shares of audience of a TV program or a public figure: one slice will show how many peopled surveyed in a poll like it or him/her, another one how many dislike, and yet a third one how many do not know it or him/her, or decline to say their viewpoint. Alternetively, it can show different sources of income of a person, a family, or a legal entity. There can be any number of slices - as many as parts of a whole totalling up to 100 per cent. Pie charts and other diagrams can be automatically generated by office software from numerical input.

When is it a good time to use a pie chart?

When you're recording how much pie you've eaten.

How are circle line and bar graphs alike and different?

A circle graph (also called pie chart, because the different data representations look like slices of a pie) will represent the data as a portion (percentage) of the whole (a full circle).

A bar graph will show absolute values of each data.

Both graphs allow you to compare the different data categories to each other (which one is biggest, smallest, etc.)

What are the advantages and disadvantages of a bar graph?

Advantages:

  • You can compare things easily
  • You can make a decision quickly

Disadvantages:

  • It can be time consuming to draw a bar graph
  • A bar graph does not show data collectively as a whole

What does a line graph in which the data points do not fall along a straight line mean?

There are several possible answers:

The line is actually meant to be a curved line and not a straight line.

The relationship between the two variables is not a linear function.

Discovering this can be one of the main reasons for drawing the graph.

The data points are empirical measurements (from an experiment, for example)

and there are errors associated with the observations. The errors may be systematic

or random.

You have made mistakes - either in recording the data or in plotting them.

Where is the independent variable and the dependent variable on the line graph?

The dependent variable is on the vertical y axis and the independent on the horizontal x axis

In the equation for example y = 3x then y is dependent on the independent variable x

What is 175 percent as a pie graph?

175% would be a pie graph and then 3/4 of another one. See the related link, "175% pie graph" for a picture.

What can a line graph tell you about the relationship between the variables in an expeirament?

It can tell you how the dependent variable (usually represented on the y-axis) changes in relation (and hence the rate of change) to the independent varaible (usually represented on the x-axis).

Why would you use a line graph for population?

A line graph would be used for population [change] because you are showing how the population increases or decreases over time.

If you are talking about comparing different populations at one given time, then a bar graph or pi chart would be used.

What does data table mean in science terms?

When science labs or "experiments" are performed the measured data must be presented in a way that is easy to understand so one or more "Tables" are used. First they must numbered (Table 1, Table 2, etc) and given a name. The simplest title would be "Results" for a simple lab exercise. Make sure you state units such as grams, meters, or cm/sec in the table so the reader can understand see your results.

In your discussion, you can make specific reference to each table. By the way, each table must be discussed or it is irrelevant information.

Why does data presented in a line graphs?

line graphs are usually the most best way to present data. sometimes i use pie graphs or bar graphs, but usually line graphs are the most meaningful.

How do you build a simple line graph?

Building a line graph is quite easy.

It will be a lot more easier to understand this if you know how to make a bar graph.

  • First, make the basics
  • Then, just mark the data with simple dots and circle around it one by one
  • With the help of scale, connect the dots, from starting to end

What are line graphs powerful tools in science?

Graphs are a powerful tool that gives you a snapshot view of the behavior of the whole field of data you examined. You may immediately see where the majority of the data points seem to gather, and you will also clearly identify the 'outliers', - the points that seem inconsistent with the overall pattern.

Use of graphs is not confined to science, many business studies are simplified by use of a graph.