Transcript Chapter 1 Review

Chapter 1 Review
Test Wednesday Aug. 18
Question

Explain the difference between a sample
and a population.
Answer

A population is the collection of all
elements in a population. A sample is a
subset of the elements in the population.
Question

There is a relationship between smoking
cigarettes and getting emphysema. Does
this statement describe descriptive
statistics or inferential statistics?
Answer

Inferential statistics
Question

Classify the colors of automobiles on a
used car lot as qualitative data or
quantitative data.
Answer

Qualitative Data
Question

Classify the number of complaint letters
received by the United States Postal
Service in a given day as qualitative or
quantitative data.
Answer

Quantitative Data
Question

Identify the level of measurement for data
that can be classified according to color.
Answer

Nominal
Question

Identify the level of measurement for data
that are the number of milligrams of tar in
45 cigarettes.
Answer

Ratio
Question

Identify the level of measurement for data
that can be classified by marriage status
(married, single, or divorced).
Answer

Nominal
Question

Identify the level of measurement for data
that are a list of 1235 social security
numbers.
Answer

Nominal
Question

Identify the level of measurement for data
that are the ratings of a movie ranging
from poor to good to excellent.
Answer

Ordinal
Question

Identify the level of measurement for data
that are the final grades
(A, B, C, D, and F) for students in a
statistics class.
Answer

Ordinal
Question

Identify the level of measurement for data
that are the annual salaries of all teachers
in California.
Answer

Ratio
Question

Identify the level of measurement for data
that are the amount of fat (in grams) in 24
cookies.
Answer

Ratio
Question

Identify the level of measurement for data
that are the years the summer Olympics
were held in the United States.
Answer

Interval
Question

The average daily temperature (in degrees
Fahrenheit) on five randomly selected
days are given below. Identify the level of
measurement.

28 31 27 32 28
Answer

Interval
Question

Which method of data collection would you
use to collect data for a study where a
drug was given to 10 patients and a
placebo to another group of 10 patients to
determine if the drug has an effect on a
patient's illness?
Answer

Perform an experiment
Question

Thirty-five sophomores, 26 juniors and 41
seniors are randomly selected from 523
sophomores, 365 juniors and 431 seniors
at a certain high school. Identify which
sampling technique is used.
Answer

Stratified
Question

At a local community college, five statistics
classes are randomly selected and all of
the students from each class are
interviewed. Identify which sampling
technique is used.
Answer

Cluster
Question

A researcher randomly selects and
interviews fifty male and fifty female
teachers. Identify which sampling
technique is used.
Answer

Stratified
Question

In a recent television survey, participants
were asked to answer "yes" or "no" to the
question "Are you in favor of the death
penalty?" Six thousand five hundred
responded "yes" while 4800 responded
"no". There was a fifty-cent charge for the
call. Identify which sampling technique
was used.
Answer

Convenience
Question

A lobbyist for a major airspace firm
assigns a number to each legislator and
then uses a computer to randomly
generate ten numbers. The lobbyist
contacts the legislators corresponding to
these numbers. Identify which sampling
technique is used.
Answer

Simple random sample (SRS)
Question

A sample consists of every 25th student
from a group of 1000 students. Identify
which sampling technique is used.
Answer

Systematic
Question

A market researcher randomly selects 200
drivers under 30 years of age and 200
drivers over 30 years of age. Identify
which sampling technique is used.
Answer

Stratified