what is the meaning of a bar graph ?

Question

is a bar graph what uses marks above a number line to represent data

Answer 1

bar graph is a graph that has thick bars indicating the frequency of each score.



For example 16 students get A grades, 7 students get B grade, 3 students get C grade, 2 students get D and 1 student gets F.



Then you would have the grades A to F on the x-axis. And the number of students on the y-axis.



So for A, the bar graph will reach 16 on y axis, for B, the graph would reach 7 on y axis, and so on.



The pattern seen will be that the bars keep getting shorter and shorter as grade keeps falling

Answer 2

Understand the maths of a Bar Graph. Click on the link to Watch the VIDEO explanation:

http://bit.ly/1yGhmoP



Bar Graphs

Let us learn about bar graphs

A Bar chart is the simplest and most widely used graph in which the numerical data is represented by bars or rectangles of equal width.

We should now list some properties of Bar Graph

The width of each bar can be arbitrary chosen, but width of all the bars should be the same.

The space between the consecutive bars should also be the same.

The height or length of a bar is proportional to the numerical data it represents.

Note: the height or length of a bar represents a quantity, whereas its width represents nothing.

There are 3 types of bar graphs

Simple Bar Graph

Double Bar Graph

Divided Bar Graph

Observe the examples of the simple bar graph

Both graphs represent the same data. Each bar represents a class of a student and its heights represents the number of students in that class. Recall that the width of each bar and the spacing between the consecutive bars are arbitrary chosen but uniformity must be maintained.

Study the example given of a Double Bar Graph

Each pair of bars denotes number of a students in a class. The completely shaded bars represents the number of the girls in a class while the partially shaded bars represents the number of the boys in the same class. The x axis gives the division of standard 9 while the y axis gives the number of the students.

Can you figure out why we need not represent total separately by a third bar in each class

Studied this example of a Divided Bar Graph

This graph represent the same data as that of the double bar graph. Here the length of each bar gives the total number of students in the class. The completely shaded portion represents the number of the girls in the class while the other portion of the bar represents the number of the boys in that class.

Let us now study a problem the table shows the marks obtained by sumit in the annual examination:



English 50

Maths 40

Hindi 60

Sanskrit 70

Science 50

Social Studies 54

Represent this data on a graph

Proceed as follows

Set up the scale on the y axis

Let 1 cm represents 10 marks

Let us set the width of each bar to 1 cm and the space between any two consecutive bars to 1 cm.

Using the chosen scale determine the length of the bar corresponding to the marks of each subject.

Draw the bar as shown in the graph. Label the bars correctly.

Answer 3

A bar graph has rectangular bars standing up like tall buildings, and their different heights show different numbers. A line graph can show the same information, except there's a line connecting the across the tops of the buildings.

Answer 4

A graph consisting of parallel, usually vertical bars or rectangles with lengths proportional to the frequency with which specified quantities occur in a set of data. Also called bar chart.



http://education.yahoo.com/reference/dictionary/entry/bar%20graph



http://www.collinsdictionary.com/dictionary/english/bar-graph



A bar chart or bar graph is a chart with rectangular bars with lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally.



Bar charts are used for marking clear data which has discrete values. Some examples of discontinuous data include 'shoe size' or 'eye color', for which a bar chart is appropriate. In contrast, some examples of continuous data would be 'height' or 'weight'. A bar chart is very useful for recording certain information whether it is continuous or not continuous data. Bar charts also look a lot like a histogram. They are often mistaken for each other.

Answer 5

Bar graph:A graph drawn using rectangular bars to show how large each value is.

Answer 6

easiest way to understand bar graphs is look at your cell phone reception.The bars you have on your phone uses a *bar graph*.

Answer 7

http://www.google.com/imgres?hl=en&biw=1619&bih=727&gbv=2&tbm=isch&tbnid=DiFQ-oovqeJ8FM:&imgrefurl=http://www.enchantedlearning.com/math/graphs/bargraph/&docid=AmB_09PxW2f0JM&imgurl=http://www.enchantedlearning.com/math/graphs/bargraph/gifs/example4.GIF&w=265&h=166&ei=rImTT6CCF8Oq2gXZ4M31BA&zoom=1&iact=hc&vpx=735&vpy=223&dur=956&hovh=132&hovw=212&tx=56&ty=117&sig=105096695523391957710&page=1&tbnh=120&tbnw=191&start=0&ndsp=21&ved=1t:429,r:3,s:0,i:155



^ Bar graph.