Get documents about "Bar Graphs, Line Plots, Frequency Tables, and Histograms
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Bar Graphs, Line Plots, Frequency Tables, and Histograms Lessons 6-4, 6-5
Why? Data is easier to interpret when it is organized into a table or a graph.
Average Summer Temperatures Number of Goals Made
40
Temperature (C)
35 4 6 2 4 3 2 0 5 3 3 0 2 3 4
30
A bar graph is used to 25
20
display countable data 15 A line plot uses a
10 x
that are grouped in 5 number line and X’s x x x
0 or other symbols to x x x x
categories. x x x x x x
for ous
t
for ous
d
res
lan
est
est
show frequencies of
u
r
n fo
ss
nife
cid
Gra
values. 0 1 2 3 4 5 6
Rai
De
Co
Biomes
Data Number of Pages Read
Item Tally Frequency Last Weekend
5
Item 1 ||| 33 A histogram is a bar graph
(Frequency)
4
Readers
Item 2 |||| 47 that shows the frequency of 3
2
occurrences within each 1
Item 3 || 29 interval. 0
1–10 11–20 21–30 31–40
Item 4 |||| 5 Number of pages
A frequency table tells the number of times
something occurs.
Ordered Pairs, Line Graphs, and Stem-and-Leaf Plots Lessons 6-6 through 6-10
Why? Choosing an appropriate data display depends on the data and the purpose.
Ordered Pairs A stem-and-leaf plot Stems Leaves
5 arranges data by place 1 1 2 3
4
Each point on a coordinate value. 2 2 2 3 6 7
3 (3, 2)
grid can be located by 3 1 1 3 3 8 9
2
using an ordered pair of 4 7 8
1
5 4 6 9
numbers, such as (3, 2). 0 1 2 3 4 5
• The starting point is (0, 0). Key: 3 8 means 38
• The first number tells how
to move horizontally.
• The second number tells
how to move vertically.
Line graphs that display Stock Prices
two sets of data are $95
Price of stock
A line graph
Stock Prices called double-line $90
displays a set of
$40 $85
Price of stock
data using line graphs. Double-line Corp. A
$30 $80
segments. Data that graphs are often used 0
Corp. B
$20
shows change over $10 to compare the two 1985 1990 1995 2000
time is best $0 data sets. Year
1985 1990 1995 2000
displayed in a line
Year
graph.
308B
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