1. Cro Tabulations
Do you remember that
categorical data is
a type of data you
caot measure?
Yes!
At least up
to today.
Why are you
staring at me?
You are wearing
your schl
uniform today.
Oh, this?
I am
going to
mi this
uniform.
Sn I wi
have to say
gd-bye
to it.
Our schl is
geing new
uniforms!
How come?
You aren't
graduating, are
you? I thought
you were sti
a junior.
Lk, this is our
new uniform.
We
conducted
a survey on
the uniform
design in our
cla.
Here are the
results.
Do you like or dislike the new uniform design?
response
like
neither
neither
dislike
dislike
dislike
dislike
neither
neither
neither
neither
neither
neither
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
like
Wow! The
results of
this survey are
categorical
data.
You can't
"measure" likes
and dislikes,
right?
A plaid sailor
outfit?
That's rather
unusual.
response response
Geing the Big Picture: Understanding Categorical Data 61
Let's make a table to
get the big picture of
a the data.
I remember
that!
I ca this
a cro
tabulation.
By the
way, what
was your
answer to
this survey
question?
I answered
that I like
it.
Here is a review
question.
What is the frequency
of like?
There were
28 people who
answered "like,"
so the frequency
is 28.
Thus the percentage
is...
Sum
Fre-
quency
%
like
neither
dislike
62 Chapter 3
Response
Let's make this into
a graph. It should
become easier to
understand.
I am more
used to
lking at
graphs.
The graph shows that
more than half of the
students answered that
they "like" it. I gue the
design of this uniform was
fairly we received.
I am not
surprised.
This uniform
is cute.
We, if I were
asked, I would
answer that I
"like" it t.
Don't woy,
we wi never
ask you that
question.
like
neither
dislike
Geing the Big Picture: Understanding Categorical Data 63

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