MIG Workshop: Introduction to Experimental Design About the Event This workshop will introduce the principles of experimental design for biological experiments. We will also explain the fundame...

📢 MIG Workshop: Introduction to Experimental Design

🗓️ Tues, Mar 17 | ⏰ 9:30 am - 12:30 pm GMT+11
📍 Kenneth Myer Building – Education Room (Ground Floor)
🎙️ Yao-Ban Chan & David Hirst
🧍‍♂️ In-person only

#Biostatistics #SampleSize #PowerAnalysis #RStats #ResearchMethods

#SampleSize is insufficient

#statstab #492 A tiny review on e-values and e-processes

Thoughts: How to be a bayesian while wearing a frequentist hat.

#evalues #eprocess #samplesize #evidence #power #sequential #error #type1

www.math.uwaterloo.ca/~wang/files/...

On the performance of the Neyman Allocation with small pilots The Neyman Allocation is used in many papers on experimental design, which typically assume that researchers have access to large pilot studies. This …

#statstab #489 On the performance of the Neyman Allocation with small pilots

Thoughts: If you know your treatment condition will have larger variance you can optimise your sample size.

#nhst #samplesize #neynan #heterogeneity #welch #variance #pilot #se

www.sciencedirect.com/science/arti...

#statstab #477 Don’t calculate post-hoc power using observed estimate of effect size

Thoughts: Good discussion and many useful references. Even big journals print stupid stuff.

#posthoc #power #sensitivity #samplesize #consort #medicine #bias

statmodeling.stat.columbia.edu/2018/09/24/d...

#statstab #470 Low power bias {shiny} app

Thoughts: easily show what conducting an underpowered study would do to your effect size (type M error).

#teaching #bias #power #typeM #typeS #QRPs #underpowered #samplesize

c-jaksic.shinyapps.io/small_power_...

Totes coming soon…

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#baggame #bagit #bigbag #getthebag #samplebag #samplesize #whatsinthebag #packedbags #streetwearculture

#statstab #448 {metaforest} Small sample meta-analysis

Thoughts: "a machine-learning based, exploratory approach to identify relevant moderators in meta-analysis"

#ML #MachineLearning #metaanalysis #smallsample #samplesize #heterogeneity #moderator

cjvanlissa.github.io/metaforest/a...

#samplesize and #ethics question: You plan for a study needing n=100 (50 per cell). Power analysis is all set up and pre-reg. But, because you do research in a uni, you are told you need to allow for more participants (students) as there is a set number of credits all need to reach. What do you do?

Sage Journals: Discover world-class research Subscription and open access journals from Sage, the world's leading independent academic publisher.

#statstab #440 Computing Statistical Power for the Difference in Differences Design

Thoughts: DiD studies are all the rage in Obs research. But how does the concept of power apply to them?

#poweranalysis #DiD #causalinference #samplesize #observational

journals.sagepub.com/doi/10.1177/...

Scientist tries to convince the program officer that their sample size is adequate to answer the research questions.

Would you gamble $500k on a coin toss? #statssky #samplesize #effectsize #clinicaltrialsWould

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#CBD #CBN #PetCBD #CalmingChews #SampleSize #PetTreats

#statstab #426 Execution of Replications

Thoughts: A good resource for conducting replications. Different ways to plan your sample size and consider "success/failure".

#replication #OpenScience #metaanalysis #samplesize #sesoi #smalltelescope

forrt.org/replication_...

Use OriginPro’s Tolerance Interval app to conduct Sample Size calculations.
#ToleranceInterval #SampleSize #OriginPro #SixSigma #LeanManufacturing #AgileManufacturing #GreenBelt #BlackBelt #QualityImprovement #QualityControl #QualityAssurance #OriginPro #OriginPro2025b #OriginLab

#statstab #421 Sample Size Planning for Statistical Power and Accuracy in Parameter Estimation

Thoughts: AIPE is based on controlling the width of the CI.
Sample size can be computed independent of effect size!

#samplesize #confidenceintervals #AIPE #power

www.annualreviews.org/content/jour...

#statstab #417 {pwrss} Practical Power Analysis in R

Thoughts: Some useful vignettes for conducting power analyses for various designs, constraints, and data types.

#poweranalysis #samplesize #r #power #guide #tutorial #sesoi #equivalence #tost #rstats

cran.r-project.org/web/packages...

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#ux #research #calculators #methods #incentives #samplesize

Sample size determination is one of the most critical steps in designing any research study or experiment. One sample t-test, two sample t-test, two-sample proportion test, sample size matters #itfeature #samplesize #basicstatistics #statisticsmcqs #dataanalysis #clinicaltrials #statisticsquiz

The Perfect Visual Proof Of Sample Size Importance

The Perfect Visual Proof Of Sample Size Importance

#Statistics #Samplesize #Research #Data #Science

sciencehumor.io/research-memes/the-perfe...

#statstab #371 Safeguard Power as a Protection Against Imprecise Power Estimates

Thoughts: tl;dr - when replicating a study, use the lower end of the CI of the original study as your effect in a power analysis.

#poweranalysis #samplesize #replication

journals.sagepub.com/doi/10.1177/...

Safeguard Power as a Protection Against Imprecise Power Estimates - Marco Perugini, Marcello Gallucci, Giulio Costantini, 2014 An essential first step in planning a confirmatory or a replication study is to determine the sample size necessary to draw statistically reliable inferences us...

#statstab #371 Safeguard Power as a Protection Against Imprecise Power Estimates

Thoughts: tl;dr - when replicating a study, use the lower end of the CI of the original study as your effect in a power analysis.

#poweranalysis #samplesize #replication

journals.sagepub.com/doi/10.1177/...

#statstab #360 Bayes Factor Design Analysis {bfda}

Thoughts: Sample size planning is confusing at first with Bayesian. But BFDA is the quick answer.

#bfda #bayesian #bayesfactor #samplesize #power #errorrate

shinyapps.org/apps/BFDA/

The Abuse of Power It is well known that statistical power calculations can be valuable in planning an experiment. There is also a large literature advocating that power calculations be made whenever one performs a s...

#statstab #353 The Abuse of Power; The Pervasive Fallacy of Power Calculations for Data Analysis

Thoughts: An seminal paper on "post hoc" power calculations.

#power #QRPs #NHST #posthoc #samplesize #effectsize

www.tandfonline.com/doi/abs/10.1...

Easton's Nook | An Urban Writing and Arts Retreat Space Easton's Nook is an intimate urban writing and arts retreat space where scholars, artists, and activists can meet, and can pursue their work individually or as a part of small, supportive, collaborati...

Hands on #Statistics education! Registration is live for 4 virtual summer workshops in conjunction with eastonsnook.com. All welcome. #LongitudinalDataAnalysis #ModelSelection #SampleSize #ScaleDevelopment #GradSchool #AcademicSky #StatisticalProgramming #SAS #STATA #SPSS #MaybeR #MaybePy

¡Feliz Cinco de Mayo!

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I’m here because I love debating with people who are so obtuse that they would be convinced that a player who has never performed at a major league level will suddenly start to perform at a major league level. #SampleSize.

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I’m giving a ten minute talk to #EMSky residents on #power and #samplesize analysis.

🧐 What do you think we often get wrong on the topic?

🗒️ Anyone with good ideas on how to make it EM relevant and keep folks awake who work night shifts at 10am?

Trying to avoid this scenario ⬇️

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VERY late April 2024 Empties! L'Oreal Bambi Eye mascara, Agraria Lemon Verbena conditioner, & Wet'n'Wild Photofocus eyeshadow primer. #AprilEmpties #april2024 #empties #DrugstoreBeauty #HotelToiletries #StashBusting #samplesize #travelsize #MakeupHoard #CheapAssChic