Aly Sheppard retweeted
Variance fades with sample size, but sampling bias is forever.
The @nytimes claims "As we reach more people, our [live] poll will become more stable and the margin of sampling error will shrink." nytimes.com/interactive/2018… This is true for random sampling, but false for live polls. See Xiao-Li Meng's statistics.fas.harvard.edu/f…
Aly Sheppard retweeted
Okay, it is that time again. #NASADatanaut app is open. Come join us and explore NASA data. Come help us find new ways to leverage our data for society. Come visit me at NASA. Who is up for it? @RLadiesGlobal #rstats xitter.cf/openNASA/status/100267…
Do you have an idea for a project that puts @NASA data to work in new and exciting ways? No matter your skill level or background, you could bring that idea to life as a member of the next class of Datanauts! Applications for Fall 2018 are open now! open.nasa.gov/blog/become-na…
Aly Sheppard retweeted
🚨🚨New 5-Day Challenge next week!🚨🚨
What: Data cleaning in R!
When: April 30 - May 4
Topics:
- Handling .json, .txt, & .xlsx files
- Filling in missing values
- Identifying & handling outliers
- Deduplication
- Cleaning numeric data
Sign up here:
kaggle.com/5-day-challenge-s…
Aly Sheppard retweeted
Y'all ready to learn some ✨data cleaning✨? Join me next week and we'll learn & apply five different data cleaning techniques:
* handling NaN's
* scaling & normalization
* parsing dates
* fixing encodings
* fixing inconsistent data entry
Sign up here!
kaggle.com/data-cleaning-cha…