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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
Bar graph example with explanation?
A bar graph represents the relative sizes of quantities with bars - rectangles - stacked
██████████ apples
█████████ pears
█████ plums
█████████ figs
or put side-by-side. When stacked as above, the rectangles should have the same height, but widths proportionate to the quantities that they represent. When put side-by-side, the rectangles should have the same width, but heights proportionate to the quantities that they represent.
In the chart above, we see that the quantity of apples is represented as the largest, the quantities of pears and of figs are almost as great and about equal one to another, and the quantity of figs is the least. (These quantities might be production or sales or imports or something else. We'd need more labels to know.)
Bar charts have a fair amount of what John Wilder Tukey called "chart junk"; they use two-dimensional figures to represent one dimension of data! But they are easy to quickly digest. People in business, political science, education, and sociology love 'em.
Do you have to label your axes in a histogram?
No, not unless you'd like for somebody else besides yourself to be able to look at it and understand what it shows. You probably should though since you may completely forget what the graph's labels are.
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>();
}
//Method to read and add the set of integer values
public void addValues()
{
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")))
{
int addInt = Integer.parseInt(userInput);
setOfInt.add(addInt);
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;
}
}
How many degrees in a pie chart is 15 percent?
A pie chart is a circle, which has 360 degrees.
So 15% of 360 is 54 degrees.
50
483
Not very good for a large number of categories.
Not good for comparing two (or more) variables, especially if one is not consistently bigger than the other.
Very poor for comparing a large number of variables.
How do you draw a pie chart using a tally table?
Suppose there are n groups and the number of tallies for the nth group is tn.
Find T the grand total of the tallies. So that T = t1 + t2 + ... + tn
Then
the angle of the first segment of the pie chart should be 360*t1/T degrees;
the angle of the second segment of the pie chart should be 360*t2/T degrees; etc.
What is 21 percent on a pie chart?
Expressing 21 percent of the whole on a pie chart would take up 21/100 x 360 = 75.6 degrees.
a pictograph is a chart with things that people like and is showed by pictures to of each subject that people like!
What are real life examples of a line graph?
Well real life examples of a line graph can be the comparison of people in your city per day, or the amount of words you write in a different time. There are so many real life actions that can be put into a basic line graph to be compared. Or maybe how long it takes for you to type, that's another example.
What is the difference between a best fit graph and a line graph?
a line graph will join all of the points yet a best fit graph will only join the dots which follow the pattern.
You can show the motion of an object on a line graph in which you plot distance against?
you can show motion by distance against time
In a bar graph which side is the horizontal scale on?
The horizontal scale typically runs along the bottom of the graph.
What are disadvantages of a double line graph?
If a legend is not provided the, data shown in the line graph could be confusing or not interpreted properly because there are two lines. It can also be hard to read if the two sets of data in the graph are similiar, making the lines appear intermingled making it visually hard to read.
