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This module presents students with a number of problems related to statistical sampling and data. In particular, students are asked to demonstrate understanding of concepts such as frequency, relative frequency, and cumulative relative frequency, random samples, quantitative vs. qualitative data, continuous vs. discrete data, and other key terms related to sampling and data. Labs changed to incorporate mini-tabs.

For each item below:

  • I

    Identify the type of data (quantitative - discrete, quantitative - continuous, or qualitative) that would be used to describe a response.
  • Ii

    Give an example of the data.
  • A

    Number of tickets sold to a concert
  • B

    Amount of body fat
  • C

    Favorite baseball team
  • D

    Time in line to buy groceries
  • E

    Number of students enrolled at Evergreen Valley College
  • F

    Most–watched television show
  • G

    Brand of toothpaste
  • H

    Distance to the closest movie theatre
  • I

    Age of executives in Fortune 500 companies
  • J

    Number of competing computer spreadsheet software packages
  • A

    quantitative - discrete
  • B

    quantitative - continuous
  • C

    qualitative
  • D

    quantitative - continuous
  • E

    quantitative - discrete
  • F

    qualitative
  • G

    qualitative
  • H

    quantitative - continuous
  • I

    quantitative - continuous
  • J

    quantitative - discrete

Fifty part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below:

Part-time student course loads
# of Courses Frequency Relative Frequency Cumulative Relative Frequency
1 30 0.6
2 15
3
  • A

    Fill in the blanks in the table above.
  • B

    What percent of students take exactly two courses?
  • C

    What percent of students take one or two courses?

Sixty adults with gum disease were asked the number of times per week they used to floss before their diagnoses. The (incomplete) results are shown below:

Flossing frequency for adults with gum disease
# Flossing per Week Frequency Relative Frequency Cumulative Relative Freq.
0 27 0.45
1 18
3 0.93
6 3 0.05
7 1 0.02
  • A

    Fill in the blanks in the table above.
  • B

    What percent of adults flossed six times per week?
  • C

    What percent flossed at most three times per week?
  • B

    5%
  • C

    93%

A fitness center is interested in the average amount of time a client exercises in the center each week. Define the following in terms of the study. Give examples where appropriate.

  • A

    Population
  • B

    Sample
  • C

    Parameter
  • D

    Statistic
  • E

    Variable
  • F

    Data

Ski resorts are interested in the average age that children take their first ski and snowboard lessons. They need this information to optimally plan their ski classes. Define the following in terms of the study. Give examples where appropriate.

  • A

    Population
  • B

    Sample
  • C

    Parameter
  • D

    Statistic
  • E

    Variable
  • F

    Data
  • A

    Children who take ski and snowboard lessons
  • B

    A group of these children
  • C

    The population average
  • D

    The sample average
  • E

    X = the age of one child who takes the first ski or snowboard lesson
  • F

    A value for X , such as 3, 7, etc.

A cardiologist is interested in the average recovery period for her patients who have had heart attacks. Define the following in terms of the study. Give examples where appropriate.

  • A

    Population
  • B

    Sample
  • C

    Parameter
  • D

    Statistic
  • E

    Variable
  • F

    Data

Insurance companies are interested in the average health costs each year for their clients, so that they can determine the costs of health insurance. Define the following in terms of the study. Give examples where appropriate.

  • A

    Population
  • B

    Sample
  • C

    Parameter
  • D

    Statistic
  • E

    Variable
  • F

    Data
  • A

    The clients of the insurance companies
  • B

    A group of the clients
  • C

    The average age of the clients
  • D

    The average age of the sample
  • E

    X = the age of one client
  • F

    A value for X , such as 34, 9, 82, etc.

Questions & Answers

I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
How we are making nano material?
LITNING Reply
what is a peer
LITNING Reply
What is meant by 'nano scale'?
LITNING Reply
What is STMs full form?
LITNING
scanning tunneling microscope
Sahil
how nano science is used for hydrophobicity
Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
what is differents between GO and RGO?
Mahi
what is simplest way to understand the applications of nano robots used to detect the cancer affected cell of human body.? How this robot is carried to required site of body cell.? what will be the carrier material and how can be detected that correct delivery of drug is done Rafiq
Rafiq
what is Nano technology ?
Bob Reply
write examples of Nano molecule?
Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
Damian
Is there any normative that regulates the use of silver nanoparticles?
Damian Reply
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
Stoney Reply
why we need to study biomolecules, molecular biology in nanotechnology?
Adin Reply
?
Kyle
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
why?
Adin
what school?
Kyle
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
Damian Reply
research.net
kanaga
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
Praveena Reply
what does nano mean?
Anassong Reply
nano basically means 10^(-9). nanometer is a unit to measure length.
Bharti
do you think it's worthwhile in the long term to study the effects and possibilities of nanotechnology on viral treatment?
Damian Reply
absolutely yes
Daniel
how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
characteristics of micro business
Abigail
for teaching engĺish at school how nano technology help us
Anassong
How can I make nanorobot?
Lily
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Collaborative statistics (with edits: teegarden). OpenStax CNX. Jul 20, 2009 Download for free at http://legacy.cnx.org/content/col10561/1.3
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