How do you estimate power in a two-group posttest-only randomized experiment?

More Nicole Loreto's questions See All

Is there any research paper about integrating mobile application like google classroom in teaching?

This is to support or serve as a guide for my thesis regarding 21st century teaching strategies. Thankyou so much in advance!

07 December 2020 8,440 4 View

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30 September 2020 7,720 2 View

How should the SWAT-CUP objective function results be interpreted?

I am not sure how to interpret the objective function results in SWAT-CUP. I have six observed variables (two streamflow sites, and four soil moisture sites) with R-squared results ranging from...

29 June 2020 3,652 3 View

Is there a way to conduct robust variance estimation (RVE) using the Comprehensive Meta-Analysis (CMA) program?

I've averaged multiple effect sizes within the same study to a single mean effect size per study, however I know this method underestimates the study's standard error and overestimates study...

04 February 2020 4,738 2 View

How do you lyse small cells (10 microns) without disrupting the mitochondria?

We consistently isolate intact/functional mitochondria from liver and heart tissue using manual homogenization (to disrupt the cell membrane) followed by differential centrifugation. I am now...

04 November 2019 9,279 1 View

What impact does burnt vegetation particulates have upon raainfall and local climate -does it reduce rainfall?

I am no longer at an Academic institution so cannot access many research articles such as Langmann B, Duncan B, Texter C, Trentmann J, van der Werf, GR (2009) Vegetation fire emissions and...

02 October 2019 5,352 3 View

What are specific dendritic cells and macrophages markers for mouse adipose tissue??

I will analyse stromal-vascular fraction of adipose tissue by FACS. The panel of antibodies could be F4/80, Cd11b, Cd45.2, Cd11c and Cd301. The macrophages are f4/80 and Cd11b positive, and Cd11c...

07 May 2019 9,687 1 View

Is Bushnell Haas (BH) Medium appropriate for enrichment of hydrocarbon-degrading microorganisms isolated from marine environment?

The composition of the BH medium is as follows: MgSO4 - 0.2g/L CaCl2 - 0.02g/L KH2PO4 - 1g/L K2HPO4 - 1g/L (NH4)2SO4 - 1g/L and FeCl3 - 0.05g/L Thank you!

06 May 2019 4,680 5 View

Can someone share the syntax for splitting a large SPSS file and saving the output files as CSV or XLS?

I am trying to split a file of over 200,000 cases by a site ID. I need to get these files into excel. I do not want to have to split the SPSS file into 280 smaller files then manually save each as...

16 April 2019 2,903 3 View

How to count cells that are both GFP and dapi positive?

I am doing a competition grow assay where GFP+ keratinocytes and mCherry+ kerationcytes are plated together, allowed to grow and passed multiple times. At each passage, cells are plated onto a...

04 September 2018 4,005 5 View

Any research paper call for publication related to management or finance or economics?

It should be standard journal (Indexed)

01 March 2021 8,379 1 View

The Shannon's index is inversely proportional to Simpson's index (1-D)?

I'm having a problem with my bloxplot with Shannon's and Simpson's indexs. The value of Shannon for my Community 1 indicating higher diversity (in relation of the Community 2), but have lower...

26 February 2021 3,033 9 View

Is anyone working on a project focused on immigrants/newcomers working in the hospitality industry and how they have been impacted by COVID?

The on-going Covid-19 pandemic has had devastating economic effects on many industries. However, few have suffered to the same extent as full-service restaurants. Numerous studies have shown that...

24 February 2021 9,496 4 View

Alternative to mediation analysis?

I am currently working on my dissertation and want to explore the role of competence as a mediator between the effect of colour of clothes on voting intention (focus on Western countries)....

21 February 2021 8,609 1 View

How to run repeated measures in mvabund?

I have a dataset of fish species abundances collected from 6 different habitats over the course of 30 years. Fish were collected multiple times per year and environmental variables were recorded...

21 February 2021 3,838 1 View

How COVID-19 has affected mental health?

The pandemic has led to depression and anxiety and its negative effects shouldn't be ignored. However, it has also led some people to become more resilient! What do you think? Thank you.

21 February 2021 4,733 19 View

What is the most prevalent drug related problem in the developed countries?

Detecting the drug related problems is an important step in the pharmaceutical care plan

21 February 2021 5,421 3 View

Where can I find raw quantitative datasets on ecosystem services?

I'm an Undergraduate student on the search for a research topic which has to involve any ecosystem service(s) and a response to environmental change. I'm looking for raw quantitative data sets (I...

19 February 2021 5,911 2 View

Can medicinal plants really play an inherent rule in the COVID-19 tackle?

Numerous scientific reports cited plant extracts with potential antiviral activity and even anti-COVID-19? Why these findings are neglected? I remember very well the warning released by the WHO to...

17 February 2021 2,141 9 View

How can I interpret a ratio variable?

Dear colleagues, I am running a regression in which I have the following regression FoodExp = 67.04 DepRatio +.....e My interest is in the interpretation of the coefficient on the dependency...

16 February 2021 2,058 2 View

George Christoff

Dear Nicole, the sample size is based on statistical power usually 80%. Just google it and you will be drowned in information. Start with Wikipedia and then go to some online sites for biostatistics.

James Leigh

See recent answer to Wahyu Hidayati on this site.

also see attached extract

Michael Huen Sum Lam

check and see if this helps you

https://www.socialresearchmethods.net/kb/statsimp.php

Nicole Loreto

thank you. I did find that resource and was quite helpful.