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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
What does the vertical axis of a histogram measure?
The y axis on a histogram represents the frequency density.
What is the Matlab code to plot a histogram?
imhist(x); where 'x' is your data or image to find histogram.
Why do line graphs are used to make predictions?
The data is plotted to determine if an upward or downward trend exists over time. It will be an indicator of what may occur next.
when you have data in table form (multilpe objects that have the same properties ie. person { name, email } )
a bar graph is unique because on bar graphs u haft to draw a line over and then draw a line up like other ones u don't haft to.
Why would you not use a pie graph to show the change in school enrollment over the years?
A pie graph is useful for illustrating parts of a total. What, in this case would your total be? The total enrolment over a number of years? If so, it is likely that the different segments are nearly the same size and the human eye is not very good at discriminating between small differences in angles.
You would not use a pie graph because, as it says, a pie graph is useful for illustrating parts of a total. if you want to do an over time thing, you use a histogram
Visual presentation of shares of a total, for up to (roughly) seven categories.
What is median on a line graph?
It is the exact point in the middle of the line segment. Add the 'x' values together , and divide by 2 ,and then add the 'y' values and divide by 2. This will give you the median of a line segment.
What are transitive pictograph verbalizations?
See the t-shirt below in the Related Links, and then read the following answer:
As with the popular and oft copied/parodied "I <3 NY" shirt, the heart in this T-shirt design IS a transitive pictograph verbalization. It is a PICTOGRAPH by virtue of definition: "A picture representing a word or idea" (American Heritage Dictionary). It's a VERBALIZATION because it's meant to be spoken; it is linguistically functional and not simply a written icon. Finally, it's TRANSITIVE in the sense that a different, albeit related, reading is commonly used ("love") in lieu of what would be its literal reading ("heart").
So spoken aloud, the design would read, "I love transitive pictograph verbalizations"!
What are the similarities between a line graph circle graph and bar graph?
First they all tell you the percentages of something and they tell you peoples opinion on things.
What are the advantages of a line graph?
It is easier to read because it can be not as cluttered as a bar graph or scatter plot graph.
What is the importance of bar graph?
Like all graphs , bar graphs give a visual representation of numerical data. This representation is designed to make it easier to understand the data it presents.
It may also highlight the specific relevant features of the data. Bar graphs make it easy
to compare the relative size of quantities, particular if the reader is more adept at judging the relative heights of bars than he is at mental arithmetic. scaling a bar graph can be used for two reasons, to jump past a large group of numbers unused (say the bar graph goes from 1-1000 but none of the data starts below 500)
Scaling can be important to emphasize a difference in numbers too, suppose item a is at 700, item b is at 850, and item c is at 1000. if your bar graph jumps from 1 to 500 and then goes up in increments of 100, it can make 700 look like its far less than 850 or 1000. this is usually a business tactic done to impress board members when presenting lackluster numbers.
What is the difference between ideograms and pictograms or pictographs?
A Pictogram or pictograph is an iconical representation, which means that it resembles what it represents. You can easily identify what it is represented. However, by using this system people couldn't represent ideas or feelings thats why ideograms appeared afterwards. Ideograms are symbols (like traffic signals) which have been preeconceived by humans. We must know previously what it represents in order to decipher its meaning.
I hope it helps! my English is not so good...
What is the difference between histograms and bar graphs?
"A Pareto chart may look at first glance like a histogram, but there are two key differences. The first is that the x variable is categorical rather than numerical. For instance, the x variable may be type of defect. The second difference is that the bars are arranged in decreasing order of frequency."
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