



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 minitabs.
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 parttime students were asked how many courses they were taking this term. The (incomplete) results are shown below:
Parttime 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?
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!
what about nanotechnology for water purification
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
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?
What is meant by 'nano scale'?
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 ?
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?
what king of growth are you checking .?
Renato
What fields keep nano created devices from performing or assimulating ? Magnetic fields ? Are do they assimilate ?
why we need to study biomolecules, molecular biology in nanotechnology?
yes I'm doing my masters in nanotechnology, we are being studying all these domains as well..
Adin
biomolecules are e building blocks of every organics and inorganic materials.
Joe
anyone know any internet site where one can find nanotechnology papers?
sciencedirect big data base
Ernesto
Introduction about quantum dots in nanotechnology
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?
how to know photocatalytic properties of tio2 nanoparticles...what to do now
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
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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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