What is a bar graph? pie graph? line graph? and a pictograph??

Question

this questions are ask from my younger brother for his homework. pls i hope you can help me :)

Answer 1

bar graph,

http://www.omnis.net/images/technews/gr2...

DEF: a chart with rectangular bars of lengths proportional to that value that they represent. Bar charts are used for comparing two or more values. The bars can be horizontally or vertically oriented. Sometimes a stretched graphic is used instead of a solid bar.

pie graph;

http://www.fedstats.gov/kids/mapstats/gr...

DEF: basically shows percentages.

pictograph;

http://alex.state.al.us/uploads/13368/Pi...

DEF: a symbol representing a concept, object, activity, place or event by illustration. Pictography is a form of writing in which ideas are transmitted through drawing. It is a basis of cuneiform and, to some extent, hieroglyphic writing, which uses drawings also as phonetic letters or determinative rhymes.

Answer 2

see these sites dear...

http://www.ais.msstate.edu/AEE/Tutorial/...

http://www.beaconlearningcenter.com/WebL...

hope it helps...

--regards--

Answer 3

A bar chart, also known as a bar graph, is a chart with rectangular bars of lengths proportional to that value that they represent. Bar charts are used for comparing two or more values. The bars can be horizontally or vertically oriented. Sometimes a stretched graphic is used instead of a solid bar.

A pie chart (or a circle graph) is a circular chart divided into sectors, illustrating relative magnitudes or frequencies or percents. In a pie chart, the arc length of each sector (and consequently its central angle and area), is proportional to the quantity it represents. Together, the sectors create a full disk. It is named for its resemblance to a pie which has been sliced.

Line graphs compare two variables. Each variable is plotted along an axis . A line graph has a vertical axis and a horizontal axis. So, for example, if you wanted to graph the height of a ball after you have thrown it, you could put time along the horizontal, or x-axis, and height along the vertical, or y-axis.

Pictograph is a way of representing statistical data using symbolic figures to match the frequencies of different kinds of data.

example: http://www.highpointsmath.com/sitemap/im...