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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

Say someone used a line graph to show info about the number of CDs she owned by different arists.Is a line graph a good choiceto show data.... Why or why not?

A line graph is not a good way to represent the data as the number of CDs is a continuous variable, but the artists are a discrete, categoric variable.

A line graph should be used when both variables are continuous. A bar chart or bar graph should be used when one variable is continuous and one is discrete.

The pie graph is used for what kind of data?

Any kind of data - nominal, ordinal or interval - provided you can group the data into a few categories. Ideally not more than seven, though in exceptional cases, up to ten may be used.

What is a triple bar graph?

a triple bar graph is where you show thrree different things by different colors.go to google and type triple bar graph for a picture.

Do histograms have titles?

Yes, you need to title a histogram graph.

What are bar graph not good for?

bar graphs are usually used for results that have a variable whose units are described in words and the other variable whose units are described in numbers such as the y axis, the vertical line, is the number of people and the x axis, the line going horizontal, is the colour of eyes.

bar graphs are not useful for the y axis and x axis both units are in numbers. these are mainly used for line graphs

What is the difference between a line graph and a scatter graph?

A line graph would be what you plot for a function. for example, y = X2. Plotting this will result in a continuous line.

A scatter graph will result from measuring a population or an experiment.

For example, if you plotted the weight vs height for your class members, you would have a scatter graph.

What is a disadvantage to using graphs and diagrams?

1. The information may be in a form that is too difficult to use.

2. They sometimes give you too much information.

In a line graph does 0 have to be in the y axle?

The y-axis (not axle) is the set of all points on the coordinate plane for which x = 0. So if you are looking for the point on the line for which x = 0 then it must, by definition, be on the y-axis.

What are the differences between line graph and line plot?

On a line graph, the points are connected by a line. Hence the name 'line graph". A line plot is, A line plot can be used as an initial record of discrete data values. The range determines a number line which is then plotted with X's for each data value.

What is the difference between double bar and double line graphs?

Double Bar graphs are usually used to show different amounts of different subjects and are depicted using "bars".

Double Line graphs are used to show fluctuations and changes in different subjects. They are presented with straight, curved or broken lines.

In algebra when you have a straight line graph if a point on the line y equals 3x-4 and has an x coordinate of 50 what is the y coordinate?

y = 3x - 4 or f(x) = 3x - 4 f(50) = 3(50) - 4 = 150 - 4 = 146 Thus, the y coordinate of the point is 146.

What does the bar graph usually represent?

usually it represents the the air presure

How does a line graph work?

With a line graph you use lines. You put numbers at the bottom of the graph and numbers on the side. In other words the bottom numbers are on the x axis and the numbers on the side are on the y axis. Then when you have the dots on the graph you connect them and then it makes a line.

What are the disadvantages of a line graph?

extremely inaccurate if you try to draw it freehand and extremely inconvenient if you have to plot fractions or decimal numbers

What is an advantage of using multiple lines on a line graph?

By using multiple lines you can show multiple pieces of data; e.g. if you have a test for the heat of liquids, then you can show multiple different liquids on the same graph. Like water and oil, you can show the water as one line and the oil as another. Saving you the need to make more graphs and making data easier to compare.

Where is the x-axis on a bar graph?

It is the horizontal line or axis below the bars.