Logo image
Comparing the lifetimes of two brands of batteries
Journal article   Open access   Peer reviewed

Comparing the lifetimes of two brands of batteries

Peter K Dunn
Journal of Statistics Education, Vol.21(1), pp.1-19
2013
pdf
PDF - Published Version610.09 kBDownloadView
Published VersionPDF - Published Version Open Access
url
https://doi.org/10.1080/10691898.2013.11889666View
Published Version

Abstract

real data t-tests hypothesis tests experimental design practical significance
In this paper, we report a case study that illustrates the importance in interpreting the results from statistical tests, and shows the difference between practical importance and statistical significance. This case study presents three sets of data concerning the performance of two brands of batteries. The data are easy to describe and understand, familiar to students, and allow a range of analyses, from simple to more complex. The data were the basis of a claim made in an advertisement, and this claim is re-assessed using the data to show that the company undersold the performance of their batteries from a statistical point-of-view in one of the three tests. However, a challenge is how such a conclusion can be communicated to the public succinctly but correctly.

Details

Metrics

117 File views/ downloads
947 Record Views

InCites Highlights

These are selected metrics from InCites Benchmarking & Analytics tool, related to this output

Web Of Science research areas
Education, Scientific Disciplines

UN Sustainable Development Goals (SDGs)

This output has contributed to the advancement of the following goals:

#3 Good Health and Well-Being

Source: InCites

Logo image