# 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.

###### 3,663 Questions
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# What is a tea chart?

a "T" chart is a chart that is basically shaped like a "T". On either side there can be two different topics

ex: on one side of the "T" there could be muffins and on the other side there could be cakes and you could compare the differences and/or similarities or maybe even likes and dislikes about the two.

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# 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.

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# When is a line graph used?

line graph is used when you wish to show the reader how one value changes with respect to one another , value over successive periods of time .

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# Why do people use a pie chart?

To show statistics, it was first used by Florence Nightingale to show the British government the statistics of the amount of hospital patients dying unnecessarily

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# What are the two types of pictograph?

A picture representing a word or idea, a hieroglyph. Or, a pictorial representation of numerical data or relationships, especially a graph, but having each value represented by a proportional number of pictures

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# When is it appropriate to use a pictograph?

It is appropriate to use a pictograph if a language isn't established and no common form of communication is known among a group of people. This way, pictures can be used to express ideas and thoughts rather than communicating through the use of signals or speech.

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Yes.

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# What is the meaning of a straight line graph?

A graph which comes out as a straight line. This is usually in the form y = mx + b where b is the y co-ordinate where the line crosses the y-axis, and m is the gradient (rise divided by run/height divided by length).

A graph of this type will always be going up (as in /) as it has positive gradient (thusly, one of negative gradient will be going downwards (\ so to speak).

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# Java Programming - How do you make histogram?

taking an introductory Computer Science Class, this program that I wrote recently may help you. Basically it asks the user to input a bunch of numbers (1-100). Then, it places the numbers into categories of either 1-10,11-20,21-30, etc. Each "*" represents 5 elements. This program isn't as efficient.. but then again , it it's an introductory Computer Science Class, it'll work and at least give you a sense of direction!

/**

*Design and implement an application that reads a set of integer values in the range of 1 to 100 from the user and

then creates the chart showing how often the values appeared. The chart should look like the one shown below.

It shows how many values fell in the range from 1 to 10, 11 to 20, and so on. Print an asterisk for every five

values in each category. For example, if a category had 17 values, print three asterisks in that row. If a

category had 4 values, do not print any asterisks in that row. Be sure to include two classes StarTable and

StarTablePrgm. Feel free to make the input/output more user friendly.

*/

import java.util.ArrayList;

import java.util.Scanner;

//Margaret Wang creates StarTable Program

public class StarTable

{

private ArrayList<Integer> setOfInt;

//Default Constructor

public StarTable()

{

setOfInt = new ArrayList<Integer>();

}

{

Scanner in = new Scanner(System.in);

System.out.println("Input an integer (1-100). Press enter to input it into the Array. Enter Q to stop adding: ");

String userInput = in.next();

while ( !(userInput.equalsIgnoreCase("Q")))

{

userInput = in.next();

}

}

public String printTable()

{

//counts how many numbers fit into each row

int count1 =0;

int count2=0;

int count3=0;

int count4=0;

int count5=0;

int count6=0;

int count7=0;

int count8=0;

int count9=0;

int count10=0;

//searches for the numbers that fit in the ranges

for (int i = 0; i < setOfInt.size(); i++)

{

if (setOfInt.get(i) <= 10)

{

count1++;

}

else if (setOfInt.get(i) <= 20)

{

count2++;

}

else if (setOfInt.get(i) <= 30)

{

count3++;

}

else if (setOfInt.get(i) <= 40)

{

count4++;

}

else if (setOfInt.get(i) <= 50)

{

count5++;

}

else if (setOfInt.get(i) <= 60)

{

count6++;

}

else if (setOfInt.get(i) <= 70)

{

count7++;

}

else if (setOfInt.get(i) <= 80)

{

count8++;

}

else if (setOfInt.get(i) <= 90)

{

count9++;

}

else if (setOfInt.get(i) <= 100)

{

count10++;

}

else

throw new IllegalArgumentException("You have entered an integer that cannot counted");

}

//Creates the Table

String table = "";

for (int a = 0; a < 10; a++)

{

table += a*10 + 1 + "-" + (a+1)*10 + "|";

if (a 9)

{

for (int j = 0; j < count10/5; j++ )

table += "*";

}

table += "\n";

}

return table;

}

}

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# What type of data would you use a bar graph to show?

Bar graphs are an excellent way to show overall trends. Example sales for the months of the year - with y-axis "Amount of Sales in Dollar Amounts" and x-axis "Months of the Year" or visa vera. The bar can be either vertically or horizontally. Bar graphs are usually a simple chart.

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History of Sports
Statistics
Graphs

# Where can you find a chart or graph that shows the popularity of different sports?

easy

Whatever you found could be the subject of great controversy anyway, as there are quite widely differing figures on many of these claims concerning inter-country "popularity" of various sports, and who, even, engages the various sports within certain of these countries.

I have even seen claims that volleyball was the most popular sport in the world! Yet it ranks No 1 in very few countries.

Of the various 'figures' that we do have, many are highly unreliable.

However, the great consensus of worldwide opinion on this subject, states that association football [soccer] is by far the most played and most popular.

From there, opinions of those that follow soccer in popularity vary greatly.

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# How do you find mean for a histogram?

You need to add all the values shown on the histogram and then divide that sum by the number of values (samples).

Example:

There are 5 values: A, B, C, D, E.

Mean value is: (A+B+C+D+E) / 5

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# What does histogram mean in math?

A histogram is a graph, kind of like a cousin to the bar graph. A histogram has no spaces between it's bars, and the intervals on the horizontal axis are equal.

For example, if you take a survey and ask how many times you went to the movies each year, people wouldn't know the exact amount they went, so you would give them choices, such as 0-10, 11-20, 21-30, and 31+. So people wouldn't have to give the exact answer, just a rough estimate. And along the vertical axis you would have the number of people per bar depending on how many times they went to the movies.

I hope this helped

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# Why do scientists use graphs and data tables?

come on i actually came on here to find an answer but yall are just horn

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# Is a bar graph discrete or continuous?

It is both, a bar graph can be for discrete and continuous it depends on how you set out the chart. If it is for discrete data then you have to have a gap between each bar but on a continuous bar graph they are all next to each other WITHOUT any gaps. Also another way to discover if a bar graph is discrete or continuous the dicrete graph bars are labelled individually but on a continuous they are not labelled as such; there is a scale on the bottom axis. Hope this helps who ever needs it :D

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# Why is it important to display data using a histogram?

It makes Data simpler to compare as opposed to a chart

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a person
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# Can changes to the vertical scale or interval affect the look of a bar or line graph?

Yes, changing the vertical scale will affect how the graph looks. To see examples, go to one of the financial web sites on Google or Yahoo and pick a few stock charts. If you are looking at an intraday chart (activity that happened during one day), the price may vary a dollar or so, but may look to jump all over the place. This is because the scale may be set to start at \$50 per share (minimum value of the vertical scale) up to \$55 maximum. Change the scale from zero to \$60 and you will see a graph that looks more like a smooth line (the changes won't look as dramatic or steep).

Another way to change the scale is to use a logarithmic scale (where each step represents 10 times the previous step). This is useful in graphs that represent exponential growth or decay. On a standard scale, the graph could look like a sharp increase, then leveling off. On a logarithmic scale, the same data plotted may look more like a straight line.

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

Scatter plots and Line graphs have similarities in that they both use an X-Y axis.

But a line graph has a line or curve to describe a formula like Y=2X+5, a Scatter plot is a collection of X-Y coordinates that have no real formula due to real life uncertainties (Heisenberg), but, once plotted, can provide a clue to a single formula.

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# What are the disadvantages of double bar graphs?

you could get confused by both of them together even if they are in color or black and white. always look carefully!!;)

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Jobs & Education
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# What is a pmi chart?

A PMI chart is a table and it stands for Plus Minus Interesting.

PLUS for Good facts.

INTERESTING for well, interesting facts.

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# What is a cumulative frequency histogram?

-Construct a frequency table

-Draw a horizontal axis and mark off the intervals.Label the horizontal axis.If the first interval does not start at 0, use a "break" symbol on the axis.

-Draw a vertical axis and identify a scale for the frequencies. Label the vertical axis.Often, the vertical axis is "frequency".

-Draw bars with heights corresponding to the frequency values in the table.

-Give the graph an appropriate title.

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Math and Arithmetic
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# How do you print in omni-graph?

From Omnigraph website: Use print preview to print on a full sheet of paper

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# What is reasonable explanation for the large gap in histogram?

Nothing happened in that time period that needed to be showed.

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