homework quiz 8 21
Download
Skip this Video
Download Presentation
Homework Quiz 8/21

Loading in 2 Seconds...

play fullscreen
1 / 14

Homework Quiz 8/21 - PowerPoint PPT Presentation


  • 97 Views
  • Uploaded on

Homework Quiz 8/21. Match the appropriate term to the correct definition. A: Collections of observations (such as measurements, genders, survey responses). B: Subcollection of members selected from a population C: The collection of data from every member of the population

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Homework Quiz 8/21' - markku


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.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
homework quiz 8 21
Homework Quiz 8/21
  • Match the appropriate term to the correct definition

A: Collections of observations (such as measurements, genders, survey responses).

B: Subcollection of members selected from a population

C: The collection of data from every member of the population

D: The complete collection of all individuals to be studied.

Data

Census

Sample

statistical thinking1
Statistical Thinking
  • Context
  • Source
  • Sampling Method
  • Conclusions
  • Practical Implications
statistical thinking2
Statistical Thinking
  • Context
  • Source
  • Sampling
  • Conclusions
  • Practical Implications
context
Context
  • Consider the following data (page 5)
  • We need to know what this represents
  • Context is what the values represent, where they came from, and why they were collected.
  • These values represent freshman Rutgers students’ weights at the beginning and end of the school year. The purpose is to test if the Freshman 15 is a real thing.
statistical thinking3
Statistical Thinking
  • Context
  • Source
  • Sampling Method
  • Conclusions
  • Practical Implications
source
Source
  • The source of the data is who is collecting the data.
  • In our example, the source is the Rutgers University Department of Nutritional Sciences.
    • Is this a reliable source?
  • An unreliable source: A shoe polish company doing a study on whether or not scuffed shoes at an interview could lead to not getting the job.
    • Why?
statistical thinking4
Statistical Thinking
  • Context
  • Source
  • Sampling Method
  • Conclusions
  • Practical Implications
sampling method
Sampling Method
  • The sampling method used is how the data is collected.
    • Voluntary Response: Participants get to choose if they want to be involved. (Less Reliable)
    • Random Sampling: A method is used to collect data randomly from the population. (More Reliable)
  • In the study we’ve been talking about, 217 students were weighed in the fall and asked to come back in the Spring. Only 67 of these students chose to return.
    • Why does this taint our results?
statistical thinking5
Statistical Thinking
  • Context
  • Source
  • Sampling Method
  • Conclusions
  • Practical Implications
conclusions
Conclusions
  • Conclusions should be based on the statistical analysis only, and should be stated in ways that people with no understanding of statistics should be able to understand.
  • The researchers in our study concluded that the freshman 15 was a myth.
statistical thinking6
Statistical Thinking
  • Context
  • Source
  • Sampling Method
  • Conclusions
  • Practical Implications
practical implications
Practical Implications
  • Practical implications are what the data really means for the people it relates to.
  • Practical Implications vs. Statistical Significance
      • In a test on whether the Atkins diet works, the data showed that the average participant lost 2 lbs a year.
      • Statistically, this shows that the diet is effective.
      • Realistically, what are the implications?
homework
Homework
  • P.10: 15-18
ad