1 / 4

First test scores for two students: Ernie: 80, 81, 83, 79, 82 Bert : 100, 68, 82, 94, 61

First test scores for two students: Ernie: 80, 81, 83, 79, 82 Bert : 100, 68, 82, 94, 61. Center + Variation = More than most Americans understand.

erica
Télécharger la présentation

First test scores for two students: Ernie: 80, 81, 83, 79, 82 Bert : 100, 68, 82, 94, 61

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. First test scores for two students: Ernie: 80, 81, 83, 79, 82 Bert: 100, 68, 82, 94, 61 Center + Variation = More than most Americans understand

  2. From “Headlines From A Mathematically Literate World (http://mathwithbaddrawings.com/2013/12/02/headlines-from-a-mathematically-literate-world/) Our World: Local Heat Wave Seen as Sign of Global Warming Mathematically Literate World: Local Heat Wave Not Seen as Meaningful Indicator of Global Trends Our World: Psychologists Tout Surprising New Findings Mathematically Literate World: Psychologists Promise to Replicate Surprising New Findings Before Touting Them Our World: Unemployment Rate Jumps from 7.6% to 7.8% Mathematically Literate World: Unemployment Rate Probably a Little Under 8%; Maybe Rising, or Not, Can’t Really Tell

  3. The takeaway about sample standard deviation “s” • Only meaningful when paired with an average • Average distance between average and sample data • When s is “big” – data is highly varied (scattered) • When s is “small” – data is highly consistent (clumped)

More Related