Assessment, Statistics, and Research: Presenting data

Showing posts with label Presenting data. Show all posts

Saturday, June 11, 2022

Creative Charts for Your Data

This stunning chart is worth a look by all those who present data at conferences or in classes.

The source of this chart and four more useful charts is an article on inflation by Flowers and Siegel of the Washington Post 10 June 2022.

I recommend a look at the other charts as well.

An additional comment. Charts about economic issues like the cost of food and energy are also about human behavior. People raise prices and people pay more for what they need or want. Too often we separate the cost of things from what people are doing.

I write about presenting data using charts in Creating Surveys.

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Sunday, August 8, 2021

Presenting Data & Different Olympic Winners Stats

Congratulations to Team USA for an outstanding performance at Tokyo 2020 in 2021

I enjoy sports. I used to follow player stats as a boy and kept track of my own even though I wasn't much of an athlete.

The Olympic medals offer an opportunity to see how different presentations of data make a difference. You could even offer more perspectives if you consider many other countries than the top winners.

ALL MEDALS: The USA easily wins overall. Great Britain beats Japan.

USA WINS OVERALL

GOLD: Team USA just edges China. Japan beats Great Britain in Gold.

POPULATION: Team GB wins among the top 4. The odds of having top athletes increase with population size. China's population is huge compared to most nations so they don't do so well. You can find countries with smaller populations who did extremely well like Australia.

There are of course other factors to consider. Perhaps you thought of some?

Wealth.

Importance of Sport.

The unique problems of COVID-19 infections of some players.

The penalty against Russia whose athletes so well.

Note: The percentage was calculated by dividing the number of medals by the population in millions and rounding.

Tuesday, June 1, 2021

Statistics of Mass Shooting in the USA

FBI Reports Data

Active Shooters 2019 FBI Report

Several aspects of the FBI reports can help students, faculty, and leaders in presenting important data to the public.

1. On page 3 they define what they mean by an "active shooter." And they clarify that the report does not include all gun-related shootings.

2. Page 4 uses a two-color strategy to compare two years (2019, 2018) side by side. The selection of numbers to compare seems reasonable to understand what is going on.

3. Page 5 tells us where the shootings take place using a color-coded map. It offers a clear look though the selection of green may not be the best color when the gray areas are the "safe zones" where no shootings took place. See photo at the top of this page.

4. The graphics on page 7 offer a helpful illustration of ways to present information to the general public. We see data, graphic comparisons, and clear colors that help differences stand out.

Reference link to FBI 2019 Report

Permission to share- see text

Understanding problems of crime involves accurate statistics presented in a way that voters and law makers can understand the facts when deciding what to do about public safety.

I write about research methods and statistics and present this information to help others present data that can help decision-makers.

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