The University of Southampton
University of Southampton Institutional Repository

Ensuring statistics have power: sample sizes, effect sizes and confidence intervals (and how to use them)

Ensuring statistics have power: sample sizes, effect sizes and confidence intervals (and how to use them)
Ensuring statistics have power: sample sizes, effect sizes and confidence intervals (and how to use them)
There is ongoing confusion in empirical energy efficiency and energy demand evaluation studies over the meaning, value and use of statistical significance and statistical power. This is compounded by confusion over how these concepts should be used both in designing studies and in deciding what can be inferred from them. As a consequence, sample sizes in most energy efficiency studies may be too low to provide adequate statistical power and so statistically robust conclusions cannot be drawn at conventional thresholds . In this paper we explore this problem via the design of a study focused on winter evening heat pump demand to demonstrate how sample sizes, effect sizes and confidence intervals matter.
Anderson, Ben
01e98bbd-b402-48b0-b83e-142341a39b2d
Rushby, Tom
bdb7715f-0331-491c-a9dd-5835f30b0bf8
Bahaj, Abubakr
a64074cc-2b6e-43df-adac-a8437e7f1b37
James, Patrick
da0be14a-aa63-46a7-8646-a37f9a02a71b
Anderson, Ben
01e98bbd-b402-48b0-b83e-142341a39b2d
Rushby, Tom
bdb7715f-0331-491c-a9dd-5835f30b0bf8
Bahaj, Abubakr
a64074cc-2b6e-43df-adac-a8437e7f1b37
James, Patrick
da0be14a-aa63-46a7-8646-a37f9a02a71b

Anderson, Ben, Rushby, Tom, Bahaj, Abubakr and James, Patrick (2021) Ensuring statistics have power: sample sizes, effect sizes and confidence intervals (and how to use them). Energy Evaluation Europe: 2021 Europe Conference: Accelerating the energy transition for all: Evaluation's role in effective policy making, Online. 10 - 16 Mar 2021.

Record type: Conference or Workshop Item (Paper)

Abstract

There is ongoing confusion in empirical energy efficiency and energy demand evaluation studies over the meaning, value and use of statistical significance and statistical power. This is compounded by confusion over how these concepts should be used both in designing studies and in deciding what can be inferred from them. As a consequence, sample sizes in most energy efficiency studies may be too low to provide adequate statistical power and so statistically robust conclusions cannot be drawn at conventional thresholds . In this paper we explore this problem via the design of a study focused on winter evening heat pump demand to demonstrate how sample sizes, effect sizes and confidence intervals matter.

Text
EEE 2021_ExtendedAbstract_Anderson_Ben_Stats - Version of Record
Available under License Creative Commons Attribution.
Download (303kB)
Text
EEE2021_Presentation_Anderson_StatsPower - Version of Record
Restricted to Repository staff only
Available under License Creative Commons Attribution.
Request a copy

More information

Published date: 16 March 2021
Venue - Dates: Energy Evaluation Europe: 2021 Europe Conference: Accelerating the energy transition for all: Evaluation's role in effective policy making, Online, 2021-03-10 - 2021-03-16

Identifiers

Local EPrints ID: 447573
URI: http://eprints.soton.ac.uk/id/eprint/447573
PURE UUID: e4a5507d-d51a-433d-9d4c-9a6198077b71
ORCID for Ben Anderson: ORCID iD orcid.org/0000-0003-2092-4406
ORCID for Tom Rushby: ORCID iD orcid.org/0000-0002-3686-5140
ORCID for Abubakr Bahaj: ORCID iD orcid.org/0000-0002-0043-6045
ORCID for Patrick James: ORCID iD orcid.org/0000-0002-2694-7054

Catalogue record

Date deposited: 16 Mar 2021 17:34
Last modified: 17 Mar 2021 02:44

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×