1 / 9

Seminar 6

Seminar 6. By Zachary H. Cohle. I stole it off a site: so it’s an observational study. How was this data produced?. Is this result a sample or for an entire population?. Wrong: It’s a sample. P. The people!. What are some sources of Bias?.

jean
Download Presentation

Seminar 6

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. Seminar 6 By Zachary H. Cohle

  2. I stole it off a site: so it’s an observational study. • How was this data produced? • Is this result a sample or for an entire population? Wrong: It’s a sample.

  3. P

  4. The people! • What are some sources of Bias? • Give some reasons why this data cannot be trusted. ‘Cause people are liars.

  5. Center? Spread? Shape?

  6. When talking about the spread, what jumps out at you. Descriptive Statistics: Ages of Men Variable N N* Mean SE Mean StDev Minimum Q1 Median Q3 Ages of Men 84 0 31.179 0.983 9.013 19.000 23.000 28.500 38.750 Variable Maximum Ages of Men 50.000 Descriptive Statistics: Ages of Women Variable N N* Mean SE Mean StDev Minimum Q1 Median Q3 Ages of Women 84 0 29.79 1.78 16.30 18.00 22.00 24.00 31.00 Variable Maximum Ages of Women 99.00 That’s right! The StDev is higher for females; therefore their ages vary more!

  7. Center? Spread? Shape?

  8. Look at the Stem and Leaf • Is the Male’s graph skewed at all? • How ‘bout the Female’s graph? • What ages of Females are most common? • How ‘bout Males? • Are the Female numbers more spread out than the Males?

  9. Finished

More Related