### Dr. Sarah's Web Polls and Census Info

**Purpose and Directions**
*Searching the web for info can
be frustrating, but also very rewarding.
In this assignment, you will
continue to develop your advanced web
searching techniques (see Homer Simpson
Tax Lab and stock market intro) to search for info on polls and
the 2000 census.
To alleviate frustration and increase chances
for succuss, work in a group and turn in 1 paper per group.
Be creative in your searches, as sometimes the obvious word to a
search will not provide an answer.
In longer pages, be sure to use the Edit/Find command
followed by the repeated use of the Edit/Find Again command
to find ALL uses of a word that you are searching
for in a given page BEFORE you answer a question. ***Your grade
will be based on how many questions you answered correctly and
completely,
and the clarity and depth of your writing and explanations,
so take your time to think carefully and discuss the issues
in your group before writing down an answer!
**You may attach extra pages if you need more room for explanation.
## USA Today Polls

Go to
this
USA Today polls and surveys link.
Summarize the contents.

Notice that if you click on the link (at the bottom) to
USA TODAY/CNN/Gallup poll index, there are no recent polls. So,
by using the search feature on the left side, find
a recent poll dated in the last month.
What did you type
that allowed you to find a page with a recent poll?

Describe the poll, the polling population, and the biases.

##
Census Info Page
Click on this link and then use Edit/Find as directed above to
answer all the questions up until the next (underlined) link.

#### How will the Census Bureau collect info on the homeless?

Which commands did you use for
Edit/Find command in the census info page and what did you find out?
Explain in detail.

#### Will people of mixed racial or ethnic heritage
be able to identify themselves on the census form?

Which commands did you use for
Edit/Find command in the census info page and what did you find out?
Explain in detail.

#### Is the Census Bureau allowed to use sampling?

Which commands did you use for
Edit/Find command in the census info page and what did you find out?
Explain in detail.

#### For the 2000 census, could people fill in census info online?

Which commands did you use for
Edit/Find command in the census info page and what did you find out?

Go to
this census search page link and conduct a search there to find the info.
What did you type in that allowed you to find a page that answers
this question? What is the answer?

## Circle Sampling Proplem from the Textbook

Compute the real average diameter of the circles and show your work.

Close your eyes and drop a pencil or pen
onto a circle page, marking the
circle that you hit.
What is the diameter?

Label the circles 01, 02,...,60 and use the Table of Random
Digits to choose one circle.
What is the diameter?

Close your eyes and drop a pencil onto a new circle page, marking the
circle that you hit, until you have marked 20 circles.
Why is this not a random sample of 20 circles? What are the biases? Compute
the average diameter.

Use the Table of Random Digits to choose a sample of 20 circles.
Why is this a random sample? Compute the average diameter.

If I performed a trial run of the two methods for a sample size
of 1 billion circles, which resulting average diameter should be closer
to the true average? Why?

When I performed one trail run of the two methods for 20 circles,
the average diameter from the pencil drop
method was closer to the actual average than was the average
for the random sample method. Assume that I did everything
correctly.
Explain how the pencil drop method could obtain
an average diameter closer to the true average
when the pencil drop method is a biased method.

Compare and contrast your average diameters
in your four actual trials and relate
this information to the bias information and to the number
of circles in each sample.