veronica berbert psych 201 worksheet 2
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Stony Brook University *
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Course
201
Subject
Statistics
Date
Jan 9, 2024
Type
Pages
6
Uploaded by CaptainScience2137
‘\\\‘
Stony
Brook
University
Name:
\
(
L)
Statistics
201
(Anderson)
:
Module
1/Chapter
2
--
Week
2
All
materials
for
this
chapter
are
available
in
Blackboard/Psych
202.01(L01-L04)/Modules/Module
1/Chapter
2
—See
Slide
set
(STAT
Chpt2_S20)
use
.pdf
if
viewing
on
a
tablet
or
phone
Before
the
first
class
for
this
chapter
—Watch
Video
1
(15
min)
—Watch
Video
2
(22
min)
—Watch
Video
3
(12
min)
—Watch
Video
4
(15
min):
Grouped
Frequency
Histograms,Percentiles
and
Percentile
Ranks.
In
class
question
1
Below
we
see
a
set
of
scores
from
a
quiz
worth
a
maximum
of
6
points.
Construct
a
frequency
distribution
table
for
the
following
data
set
Note:
question
numbers
correspond
to
the
video
so
Qla
signifies
that
you
should
follow
instructions
from
video
1,
and
a
indicates
this
is
the
first
question
from
video
1.
Questions
from
Video
1:
Qla:
In
the
table
below,
create
a
column
for
the
number
of
points
scored
for
each
possible
value.
The
video
and
textbook
instruct
us
to
place
the
Data:
1,1,2,2,2,3,3,4,4,5,6
The
video
and
textbook
instruct
us
to
place
the
a)
'
Highest
X
value
at
the
top
b)
lowest
X
value
at
the
top
Next,
create
a
frequency
column
and
fill
in
the
values.
For
the
sole
use
of
students
at
Stony
Brook
University.
Copyright
©
2023
(Copyright
Brenda
J
Anderson)
All
Rights
Reserved
‘\\\‘
Stony
Brook
University
-
\
g
Aoy
|
X
|
(
|
(¢
H
\
Vi
'l
Q1b:
If
you
relied
solely
on
the
frequency
distribution
table,
how
would
you
find
the
number
of
scores
(sample
size,
n)?
Sum
the
frequency
column.
What
does
this
value
tell
you?
Qlc:
Using
a
frequency
distribution
table,
find
the
sum
of
X—circle
it
in
the
table.
Q1d:
Find
the
proportion
if
subjects
that
scored
each
value.
Qle:
Find
the
percent
of
sdbjects
at
each
value.
J
Q1f:
What
is
the
formula
used
to
calculate
p
for
each
row?
-
Qlg:
Howisp
differefit
from
percent?
|
,(‘
P20
MUV
y
Q1h:
Graph
the
data.
Be
sure
to
provide
labels
for
the
X
and
Y
axis.
Use
a
frequency
histogram.
2a
(From
video
2)
Draw
a
symmetrical
unimodal
distribution.
Provide
labels
for
the
X
and
Y
axis.
For
now,
X
can
simply
be
labeled
“measuring
unit”
or
you
can
use
something
common
such
as
“cm”).
You
don’t
need
to
show
a
scale
for
now,
because
we
are
focused
on
the
shape.
For
the
sole
use
of
students
at
Stony
Brook
University.
Copyright
©
2023
(Copyright
Brenda
J
Anderson)
All
Rights
Reserved
‘\\\\
Stony
Brook
University
des
ib
Qraw
a
symmetrical
bimodal
Istribution.
Provide
labels
for
the
X
and
Y
aXis
(X
can
simply
be
measure).
You
don’t
Need
to
show
a
scale.
2c
Draw
a
positively
skewed
distribution.
Provide
labels
for
the
X
and
Y
axis
(X
can
simply
be
measure).
You
don’t
need
to
show
a
scale.
\
\\‘
y"
\
|
L
.
2d
What
are
the
three
characteristics
we
look
for
in
distributions?
If
you
aren’t
sure, refer
back
to
the
slide
set.
1)
2)
3)
Question
3:
Grouped
Frequency
Distributions:
Imagine
that
you
have
a
catapult
and you
have
used
it
to
Propel
ping
pong
balls.
If
you
propelled
a
ball
22
times
and
measured
the
distance
propelled
in
Cm,
your
data
might
look
like
the
following:
0000
207
181
170
163
138
203
179
168
161
121
192
177
166
159
187
174
166
154
183
172
164
146
Q3a
What
is
the
difference
between
the
highest
and
lowest
distance
the
ball
was
propelled?
)
To
organize
you
data,
you
will
construct
a
grouped
frequency
distribution
table
as
shown
in
video
3,
follow
the
process
below:
For
the
sole
use
of
students
at
Stony
Brook
University.
Copyright
©
2023
(Copyright
Brenda
J
Anderson)
All
Rights
Reserved
Your preview ends here
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‘\\w
Stony
Brook
University
TR
e,
-
-
Q3b
What
is
the
ideal
number
of
categories/bins
for
grouped
frequency
distributions?
Q3c
What
is
the
difference
between
the
highest
and
lowest
distance
the
ball
was
propelled?
v
A
>
Q3d
Can
you
use
both
of
these
to
identify
the
range
for
the
individual
bins/categories?
If
you
aren’t
sure, refer
to
the
slide
set.
(.
i
Q3/4:
Fill
in
the
Grouped
Frequency
Distribution
Table
below:
Start
with
the
largest
category
at
the
top.
Remember
the
category
label
is
the
midpoint
of
the
range
for
that
category.
Center
your
categories
around
the
simplest
set
of
numbers
for
the
options
you
have
(e.g.,
if
you
could
use
.5
or
1,
center
around
1).
Q3
(3
means
from
video
3):
Include
columns
for
p
and
percent.
Stop
there.
Category
labels
|
f
p
percent
cf
Percentile
Rank
10
A
\
).0M5
U
S
21
|
00
l
)
OMG
i
(always
use
2
decimal
places
in
this
class)
The
key
has
two
pages
for
this
set
of
questions,
one
for
centering
around
5s
and
one
for
centering
around
10s.
Fill
out
the
p
and
percent
columns
in
the
table.
3e:
What
percentage
of
scores
fell
in
second
lowest
category?
For
the
sole
use
of
students
at
Stony
Brook
University.
Copyright
©
2023
(Copyright
Brenda
J
Anderson)
All
Rights
Reserved
~g]
‘\\\\
Stony
Brook
University
<
3f:
What
percentage
of
scores
fell
in
the
category
with
the
highest
scores?
Before
completing
the
next
sections,
be
sure
to
have
watched
the
last
two
videos.
—Watch
Videos
5
(17
min);
use
interpolation
to
find
percentile
and
percentile
ranks
from
grouped
frequency
distributions.
—_Watch
Video
6:
Stem
and
Leaf
Diagrams
(3
min)
on
your
own
time.
Now
let
us
use
the
percent
and
percentile
information
from
video
4
Q4a:
Fillin
the
cumulative
frequency
column
in
the
table.
What
is
the
percentile
rank
for
the
-
:
highest
value
in
the
highest
category?
(only
about
30%
of
students
get
this
right
so
think
carefully
about
what
you
are
asked
to
find,
and
how
it
differs
from
question
3f).
Q4b
What
is
the
cf
for
the
category
labeled
185/190
(depending
upon
your
category
midpoints)?
1.0
Q4c
What
is
the
percentile
rank
for
the
upper
real
limit
for
the
category
labeled
195/200?
Q4d:
Draw
a
frequency
histogram
using
the
box
below
Will
you
use
a
bar
graph,
frequency
histogram,
or
frequency
polygon?
Why?
What
factors
determine
your
answer?
Q4e:
Be
sure
to
label
your
X
and
Y
axis
with
values
and
names.
(use
the
grid
below
to
guide
you.)
Use
the
lowest
scores
on
the
left
side
of
the
X
axis.
g
«&f’“
-
For
the
sole
use
of
students
at
Stony
Brook
University.
Copyright
®
2023
(Copyright
Brenda
J
Anderson)
All
Rights
Reserved
fi
‘W
Stony
Brook
University
Naisie
Q4i
Now,
plot
the
cf
distribution.
O~
£
Checking
completion:
Upload
these
sheets
in
the
upload
link
for
the
Worksheet
in
Chapter
2
Brightspace/Psych
202.01/Modules/Module
1/Chapter
2/
Helpful
hint
for
succeeding
in
this
course:
Use
the
feedback
from
the
worksheets
and
homework
assignments
to
identify
where
you
are
confused,
and
need
help.
Access
help
by
referring
back
to
the
textbook,
slideset,
videos,
asking
questions
in
class
or
attending
office
hours.
You
must
be
responsible
for
seeking
help
when
you
need
it.
For
the
sole
use
of
students
at
Stony
Brook
University.
Copyright
©
2023
(Copyright
Brenda
J
Anderson)
All
Rights
Reserved
XY
IO
N
T
e
T
e
S
MR
R
STUL
.
Vi
™
(N
I
IR
rVE
RGN
SN
AR
TR
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