GraphsGraphsGraphsGraphs

V. MartinezV. Martinez

Essential Question• In what ways do we use graphs to

solve problems in our daily lives?

Line Plot –organizes data

Ages of People in an apartment building.

Bar Graph• A bar graph is used to compare

amounts.

Pictograph• A pictograph uses pictures or

symbols to represent an assigned amount of data.

• A pictograph takes the form of a bar graph.

Advantages of a pictograph

• A pictograph is easy to read.• 2. They show trends in data

clearly.• 3. They are fun to use.

Disadvantages of a pictographs

• It may be difficult to find a symbol or picture to represent the data.

• 2. The key can be confusing to read. 3.  A pictograph can be difficult to make.

Line Graph• A line graph is used to show

change over time.• You can use a line graph to look

for trends and to make predictions.

Temperature Line Graph

Click here to see more about line graphs

• http://www.mathgoodies.com/lessons/graphs/line.html

Line Graph - a graph that shows changes over time.

Use the data in the table to make a Line

Graph.

Y e a r 1 9 9 5 1 9 9 6 1 9 9 7 1 9 9 8 1 9 9 9

A v g . R a i n f a l l 8 1 0 7 1 3 5

Each year the average rainfall was measured

in inches.

1. Draw the “L” Box2. Put the title.

• Average Yearly Rainfall• l• l• l• l• l• L________________________

3. Label the x and y axis

• Average Yearly Rainfall• 10l• 8 l• 6 l• 4 l• 2 l• 0 L________________________• 1995 1996 1997 1998 1999

• Average Rainfall

Add the data by placing dots.

• Average Yearly Rainfall• 10l x• 8 l x• 6 l x • 4 l• 2 l x• 0 L_______________________x_• 1995 1996 1997 1998 1999

• Average Rainfall

Average Yearly Rainfall

0

2

4

6

8

10

12

14

1995 1996 1997 1998 1999

Rai

nfal

l in

inch

es

Year

Avg. Rainfall

Connect the dots.

LABELS LEGEND

E

TITLE

Draw a line graph.• Temperatures In NY City

• Day 1 43° F• Day 2 53° F• Day 3 35° F• Day 4 57° F• Day 5 59° F• Day 6 67° F

Compare your graph.

Use the data to make a line graph.

• Sam's Weight• Month Weight in Kg• January 49• February 54• March 61• April 69• May 73

The graph is easier to read than the table.

What do you notice about Sam’s weight?