Prev. Article Next Article Table of Contents

Article

Using Candy Samples To Learn about Sampling Techniques and Statistical Data Evaluation

Citing Articles

Your current credentials do not allow retrieval of the full text.

Purchase the full-text

PDF/HTML,
figures/images,
references and tables,
(where available)

Larissa S. Canaes , Marcel L. Brancalion , Adriana V. Rossi and Susanne Rath

Department of Analytical Chemistry, Institute of Chemistry, State University of Campinas, 13084-971 Campinas, SP, Brasil

J. Chem. Educ., 2008, 85 (8), p 1083

DOI: 10.1021/ed085p1083

Publication Date (Web): August 1, 2008

Abstract

A classroom exercise for undergraduate and beginning graduate students that takes about one class period is proposed and discussed. It is an easy, interesting exercise that demonstrates important aspects of sampling techniques (sample amount, particle size, and the representativeness of the sample in relation to the bulk material). The exercise also explores a simple statistical approach to commonly used parameters (mean, median, standard deviation, errors, quartiles, confidence limits); the presentation of results using histogram, box-plot and whisker plot; and the related tests (normality, outliers, significance) using parametric and non-parametric statistical methods.

Keywords (Audience):

First-Year Undergraduate / General

Keywords (Domain):

Analytical Chemistry

Keywords (Pedagogy):

Hands-On Learning / Manipulatives

Keywords (Subject):

Learning Theories

View: Hi-Res PDF | PDF w/ Links

Citing Articles

Citation data is made available by participants in CrossRef's Cited-by Linking service. For a more comprehensive list of citations to this article, users are encouraged to perform a search in SciFinder.

This article has been cited by 1 ACS Journal articles (1 most recent appear below).

A Laboratory Exercise To Demonstrate the Theory and Practice of Analytical Sampling
Brian A. Logue and Stephanie L. Youso
Journal of Chemical Education2010 87 (3), 316-319
- A Laboratory Exercise To Demonstrate the Theory and Practice of Analytical Sampling
  Brian A. Logue and Stephanie L. Youso
  Journal of Chemical Education2010 87 (3), 316-319
  In analytical chemistry classes, the importance of gathering a proper sample for analysis of bulk materials is often addressed only briefly or not at all. Although a number of classroom and laboratory exercises have been developed to illustrate factors ...
  Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links