Li n e Pl o t s
r
A line plot is created by placing a m ark above a n u m b e r line corresponding to each
data value. Line plots have two m ain advantages:
- You can see the frequency of d ata values.
- You can see how the data values com pare.
Ex a m p l e
The table at the right gives the heights, in inches, of a group of 25 adults. Display
the data in a line plot. D escribe the data shown in the line plot. Heights of Adults (in.)The data are graphed
on a number line.The title describes
the data.An X represents
one element of
the data set.Heights of Adults (in.)
X
\ XX XX
\ XXX XX X X
— \ XX XXX XXXXXXX I I-I T I I \ \ I h—IX----
58 60 62 64 66 68 70 72 74 76 78
The line plot shows th at m ost of th e heights are co n cen trated aro u n d 67 in.,
the m axim um value is 77 in., a n d th e m in im u m value is 59 in.Ex e r c i se s
Display each set of data in a line plot.- 3, 6 , 4, 3, 6 , 0, 4, 5, 0, 4, 6 ,1, 5,1, 0, 5, 5, 6 , 5, 3
- 19, 18, 18,18, 19, 20, 19, 18, 18,17, 18, 20, 19, 17
Draw a line plot for each frequency table.
3.
Number 123 4 5 6
Frequency 4 10572Number 12 13 15 16 18 19
Frequency 2 5 1 3 6 359 60 63 63 64
64 64 65 65 65
67 67 67 67 68
68 68 69 70 70
71 72 7 3 7 3 7 7- Olympics The n u m b ers of gold m edals w on by different countries d uring the
2002 W inter Olympics are listed below.
1,1,1, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 5, 7, 10,12, 13
Display the d ata in a line plot. D escribe th e d ata show n in th e line plot.
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Po w erAlg eb ra.com Skills H andbook 809