CSAFE @ ISU - REU 2017

Statistical Approaches to Matching Bullets

Marion Gray-Lion

Posted on July 28, 2017

What data do Hare et al use? The data used was: the Hamby Study of known impressions as a reference database, the random forest model software, and two other R packages – x3pr and bulletr, developed by Hoffman and Hare. Data was collected using 3D topographical images of... [Read More]

What is a p-value anyway?

Kahlil Sample

Posted on July 21, 2017

Chapter 13 The reasoning for saying “provided strong evidence that using the busy road was quickest” as opposed to “proved that using the busy road was quickest” is because the outcome of the experiment cannot be “proved” without measureable data. A very small p-value was... [Read More]

p-values

Amanda Rae

Posted on July 21, 2017

Background: Read Chapters 13-15 of the book What is a p-value anyway? by Andrew Vickers. (Sam and Joe will have handed copies out already.) Respond to the circled discussion questions at the end of each chapter. Remember, length of response is not as important as how well and how... [Read More]

Untitled

Anna Steffensmeier

Posted on July 21, 2017

Chapter 13: 1) To say you have proved something suggests that it is a fact. He did not prove that the busy road was ALWAYS the fastest, but the evidence suggested that in most cases the busy road was quicker than the back roads. 2) A p-value isn’t a numbers... [Read More]

What is a p-value anyway?

Francesca Spencer

Posted on July 21, 2017

Chapter 13 The narrator stated they “provided strong evidence” rather than “proved” that using the busy road was quickest because it takes more to prove that something is the way it is. The narrator stated that from the statistical analysis that they conducted by timing the rides home... [Read More]

CSAFE @ ISU REU

Summer 2017

195 Durham Center

Iowa State University

Leaders: Joe Papio, joepapio at iastate dot edu and Sam Tyner, sctyner at iastate dot edu

Description:

Statistical Approaches to Matching Bullets

Marion Gray-Lion

What is a p-value anyway?

Kahlil Sample

p-values

Amanda Rae

Untitled

Anna Steffensmeier

What is a p-value anyway?

Francesca Spencer

More info...