Lesson 1: Types of Data (3 of 3)
5. .
The police department collected data on fatal crashes. One of the questions it asked was:
'What was the age of the driver involved in a fatal crash?'
a Describe the type of data collected by the police department.
b The question was modified to give the interviewee six choices:
\[
17-24 \text { years, } 25-34 \text { years, } 35-44 \text { years, } 45-54 \text { years, } 55-64 \text { years, } 65+\text { years }
\]
Describe the type of data that would result from these choices.
6. Which Statement about categorical data is true?
a. They are sometimes represented by numbers that indicate size or an amount
b. They are sometimes represented by symbols
c. They are represented by numbers that take on separate values
d. They are represented on a smooth scale
Answer
\(\boxed{\text{6. The true statement about categorical data is:}}\) \(\text{They are sometimes represented by symbols.}\)
Step 1 ：5a. The type of data collected by the police department is \(\text{numerical data}\).
Step 2 ：5b. The type of data that would result from the given age ranges is \(\text{categorical data}\).
Step 3 ：\(\boxed{\text{6. The true statement about categorical data is:}}\) \(\text{They are sometimes represented by symbols.}\)
