(22 total
marks)
1.
Observations
from
the
first
25
days
of
the
year
showed
that the
following
number
of
pedestrians
used
a
p;\icu
r
crosswalk
on
gach
day;
8
LU
AP
A
marks)
5w
6455
o
o
S
HA
f
o
125~
a.
Construct
a
frequency
distribution
for
this
data
using
a
lower
limit
for
the
first
class
of
15
and
a
class
width
of
20.
Indicate
the
class
limits,
boundaries,
midpoints,
frequencies
and
cumulative
frequencies.
Class
boundries|"
9P
]2
[
Sreopiency
[Forytimmay
|-
fusirch
22
|cequtncy
n
e
loweyr
timit
upper
limit
15
35
25
Y
q
006
|
o
35
55
4s
2
o
0.08
|
24
55
15
LD
T
'3
0.28
bY2
s
a5
85
o
19
o.24
|
70
a5
ns
105
Y
23
ote
|
gz
1ns
1395
125
2
25
0.08
)00
suo1asypad
50
XQquAU
class
Wid+th=20
J.upper
Vimi¥=
15420=35
Relative
-flequmc,x_.,
(4
marks)
o__
&
S
5
&
&
cumulotive
-Fvequenmi:
frequency
of
class
4
previous
class
'Frcqu
)
First
cumulakive
frequency
o
previous
cass
IS
Q
b.
C_reat_e
a
relative
frequency
polygon
of the
number
of
pedestrians.
velative
-F(e%uenc\'
=
class
Frequency
/25
l\auan*oa%
MLY0\RY
