Tables and Graphing
Chapter 2 Section 3
Tables
• Tables- these display
information in rows
and columns so that it
is easier to read and
understand.
• Many of our labs we
have done and will do
contain tables for our
information.
Lightsaber
Color
How Many
Jedi Use It
Blue
18
Green
15
Purple
1
Yellow
5
Red
4
Orange
2
Graphs
• Graphs- these are used to collect organize,
and summarize data in a visual way.
• There are three main graphs used in science
– Bar Graph (We used this in the M&M lab)
– Line Graph
– Pie Graph
Bar Graphs
• Bar Graphs- uses rectangular
blocks, or bars, of varying sizes to
show the relationships among
variables. (Comparing more than
one variable)
• The Dependent variable (the
variable that is being measured) is
on the y axis
• The Independent variable (the
variable that changes) is on the x
axis
Line Graph
• Line Graph- shows how one variable
changes over time.
– Both variables in a line graph must be
numbers
– Often line graphs are used to show
something happening over time.
– The line shows the relationship between the
two variables on the graph
Pie
Graph
• AKA Circle Graph
• Pie Graph-shows the parts of a whole.
• It shows things in fractions and percentages.
• Making a pie graph
• A pie graph is a circle.
• A circle is 360 Degrees.
• So to find a portion of a pie graph you need to
find how much out of 360 Degrees your portion
represents.
How to make a pie graph
• Remember percentages?
• If there are a total of 45 Jedi and 15 of them
use a green Lightsaber then the percentage of
Jedi with green Lightsabers is:
(15/45) * 100 = 33.3%
• Take (15/45) * 360 = 120
• 33% of 360 Degrees is 120 Degrees
Viewing Pie Graphs by Degrees
SO….Pie Chart for our lightsaber
table would be…