Jarad Niemi

Welcome to STAT 401A Statistical Methods for Research Workers

This website is designed to host course material for STAT 401A - Statistical Methods for Research Workers at Iowa State University.

This course meets

  • MWF 8-8:50 Sweeney 1134
  • M 2:10-4 Gilman 2272

Office hours are

  • Instructor: M 9-11 @ Snedecor 2208
  • TA: T 1-3 @ Snedecor 1205

The textbook for the course is The Statistical Sleuth (3rd ed) by Ramsey and Shafer.

Relevant course pages

Course Description

Methods of analyzing and interpreting experimental and survey data. Statistical concepts and models; estimation; hypothesis tests with continuous and discrete data; simple and multiple linear regression and correlation; introduction to analysis of variance and blocking.

Course Objectives

  • Understand the difference between a population and a sample.
  • Learn to use statistical methods, e.g. t-tests, rank sum tests, ANOVA, regression, etc., to analyze experimental and observational data.
  • Perform, check assumptions, and interpret multiple linear regression.
  • Write, interpret, and critically evaluate statements such as
    • No significant differences were observed between A/H5N1_HA N182K- and A/H5N1_HA Q222L,G2245-inoculated animals, as calculated by comparing the viral titer (Mann-Whitney test, P=0.589 and 0.818 for nose and throat titers, respectively).
    • … estimate gross carbon emissions across tropical regions between 2000 and 2005 as 0.81 petagram of carbon per year, with a 90% prediction interval of 0.57 to 1.22 petagrams of carbon per year.

Prerequisite

The prerequisite for the course is STAT 101, 104, 105, 201, or 226 or equivalent. The content that you should understand from this previous course is summarized here.

Q&A

Please use the Blackboard discussion forum.

Faculty Senate Recommendations

This course abides by the Faculty Senate Recommendations provided at http://www.celt.iastate.edu/teaching/preparing-to-teach/recommended-iowa-state-university-syllabus-statements.