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Cool Investigations USING a
Census @ School Project
Dave FerrisDave Ferris
Noblesville (IN) High School
Noblesville (IN) High School
Plan for today:
1.1. Overview of Census at SchoolOverview of Census at School
2.2. Nuts and boltsNuts and bolts
3.3. Student Project IdeaStudent Project Idea
4.4. Q & AQ & A
Google docs: links in Rebecca’s e-
Favorite quotes:
““Data are a snapshot of some real Data are a snapshot of some real situation and have a story to tell. Our situation and have a story to tell. Our objective is to objective is to uncover that storyuncover that story.”.”
““Statistics is the art of Statistics is the art of distilling distilling meaning from datameaning from data.”.”
A Purdue University study combed over more than A Purdue University study combed over more than 23,000 Indiana police crash reports from 2007 & 23,000 Indiana police crash reports from 2007 & 2008.2008.
Researchers found that Indiana drivers have greater Researchers found that Indiana drivers have greater risk of serious injury and death for men 45 and older risk of serious injury and death for men 45 and older driving on snow and ice, women driving on rain-slick driving on snow and ice, women driving on rain-slick highways, and younger men driving on dry roads. highways, and younger men driving on dry roads.
Older men driving driving pickup trucks were 81% Older men driving driving pickup trucks were 81% more likely to be injured on snow and icy surfaces more likely to be injured on snow and icy surfaces than men in the same age group driving other than men in the same age group driving other vehicles.vehicles.
Just heard recently:
From GAISE: From GAISE: (Guidelines for Assessment and Instruction in Statistics Education)
““Every high- school graduate should be able to Every high- school graduate should be able to use sound statistical reasoning…”use sound statistical reasoning…”
Formulate QuestionsFormulate Questions
Collect DataCollect Data
Analyze DataAnalyze Data
Interpret resultsInterpret results
www.amstat.org/education/gaise
Overview of CAS:
• Hosted by ASA Hosted by ASA (American Statistical Association)(American Statistical Association)
• Data from 40-question survey, grades 4-12Data from 40-question survey, grades 4-12• Can collect own students’ data and analyzeCan collect own students’ data and analyze• Can collect samples of entire US databaseCan collect samples of entire US database
• .csv files to Excel to Fathom, etc..csv files to Excel to Fathom, etc.• International CAS: International CAS: http://www.censusatschool.com/
• (not the same survey questions as US)(not the same survey questions as US)
The Process:The Process:•Teacher must register and set up classes.Teacher must register and set up classes.
• Each class is assigned an ID #, but YOU Each class is assigned an ID #, but YOU choose the password.choose the password.
•Students complete a fun, 40-question Students complete a fun, 40-question online surveyonline survey
• HINT: have students measure themselves HINT: have students measure themselves prior to logging onprior to logging on
•Analyze YOUR classes’ results, OR…Analyze YOUR classes’ results, OR…•Compare your class with samples from the Compare your class with samples from the U.S.U.S.
www.amstat.org/censusatschoolwww.amstat.org/censusatschool
www.amstat.org/censusatschoolwww.amstat.org/censusatschool
www.amstat.org/censusatschoolwww.amstat.org/censusatschool
www.amstat.org/censusatschoolwww.amstat.org/censusatschool
www.amstat.org/censusatschoolwww.amstat.org/censusatschool
www.amstat.org/censusatschoolwww.amstat.org/censusatschool
Suggestion: Make a ½ sheet of all the
measurements that students will need to
know/measure ahead of time, and have
them complete before going to the
computer.
CAS Project: (Beta Version)First day in lab: students “messed around” with CAS data, First day in lab: students “messed around” with CAS data, Fathom and Word. This allowed them to see the types of Fathom and Word. This allowed them to see the types of things they could do.things they could do.
Students wrote 2-3 questions that could be explored using Students wrote 2-3 questions that could be explored using CAS data and Fathom. I had to approve at least one question.CAS data and Fathom. I had to approve at least one question.
Second day in the lab: students collected data, statistics and Second day in the lab: students collected data, statistics and graphs using CAS web site, Fathom and Word.graphs using CAS web site, Fathom and Word.
Students wrote a report consisting of: question, relevant Students wrote a report consisting of: question, relevant statistics and graph(s), and a conclusion that was justified statistics and graph(s), and a conclusion that was justified from the data.from the data.
Rubric: question, data, visual display, conclusion, follow-up Rubric: question, data, visual display, conclusion, follow-up Q’s Q’s
Cool Questions:Do males have better reaction times than females?Do males have better reaction times than females?
Do high school students have better reaction times Do high school students have better reaction times than elementary students? than elementary students?
Are male students taller than female students at Are male students taller than female students at every grade level?every grade level?
How many text messages do teenagers send each How many text messages do teenagers send each day?day?
Would students rather be rich or famous? Does this Would students rather be rich or famous? Does this differ by age group? (elementary vs. high school)differ by age group? (elementary vs. high school)
Which states have the highest participation rates in Which states have the highest participation rates in this survey? Are all states represented?this survey? Are all states represented?
MORE Cool Questions:Is gender related to choice of super power?Is gender related to choice of super power?
Is the number of text messages sent daily related Is the number of text messages sent daily related to the number of hours of sleep on a school night?to the number of hours of sleep on a school night?
Is the number of hours spent studying related to Is the number of hours spent studying related to the number of hours of sleep on a school night?the number of hours of sleep on a school night?
Is favorite sport related to state of residence?Is favorite sport related to state of residence?
What type of sample would be best?What type of sample would be best?
Is “Favorite Music” related to “Favorite Charity” among Is “Favorite Music” related to “Favorite Charity” among high school students?high school students?
Who gets the most sleep on a school night, males or Who gets the most sleep on a school night, males or females?females?
EVEN MORE Cool Questions:Which gender has the most variable foot sizes?Which gender has the most variable foot sizes?
Is there an association between internet use and Is there an association between internet use and hours of sleep?hours of sleep?
Is there an association between time spent with Is there an association between time spent with family and time spent doing homework?family and time spent doing homework?
Is there an association between height and reaction Is there an association between height and reaction time?time?
If so, what could be a confounding variable?If so, what could be a confounding variable?
How many more hours do girls spend texting than boys?How many more hours do girls spend texting than boys?
Does the state affect the students’ favorite type of Does the state affect the students’ favorite type of music?music?
What proportion of students are left-handed?What proportion of students are left-handed?
You can select:You can select:Sample sizeSample sizeState(s)State(s)Grade levelGrade levelGenderGenderYear collectedYear collected
Things students discover:
Fathom is cool…Fathom is cool…
Data is messy and will need to be Data is messy and will need to be “cleaned.”“cleaned.”
Scope of inference is limited.Scope of inference is limited.
Technology has limitations (graphs, etc.)Technology has limitations (graphs, etc.)
(I hope) Getting accurate data is critical.(I hope) Getting accurate data is critical.
Things I learned:
Students used too many graphs.Students used too many graphs.
Several were not helpful…Several were not helpful…
Students used imprecise/wrong terminologyStudents used imprecise/wrong terminology
Students were too eager to delete outliersStudents were too eager to delete outliers
Students concluded a difference even if the Students concluded a difference even if the difference may not have been significant.difference may not have been significant.
http://www.censusatschool.com/
US Census at School – Resources
www.amstat.org/censusatschoolwww.amstat.org/censusatschool
Cool Investigations USING a
Census @ School Project
Dave FerrisDave Ferris
Noblesville (IN) High School
Noblesville (IN) High School
