1 / 14

INFERENCE

INFERENCE. Writing Question and Conclusion. CHEDDERCO is looking to put in new lockers for its workers. But they wonder whether the height of the lockers should differ between men and women?

herr
Download Presentation

INFERENCE

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. INFERENCE Writing Question and Conclusion

  2. CHEDDERCO is looking to put in new lockers for its workers. But they wonder whether the height of the lockers should differ between men and women? • They also wonder whether the lockers of the people running the morning shift should be bigger than those running the evening shift

  3. Key Components to an Investigative Question The questions written in the previous slide are fine if you’re not a statistician. But when a statistician writes themselves an investigative question, it should be precise and unambiguous A good investigative question should include the following: • VARIABLE being examined • GROUPS being compared • POPULATION the inference will be made for • PARAMETER used for comparison

  4. VARIABLE being examined CHEDDERCO is looking to put in new lockers for its workers. But they wonder whether the height of the lockers should differ between men and women? height They also wonder whether the lockers of the people running the morning shift should be bigger than those running the evening shift Volume of belongings

  5. GROUPS being compared CHEDDERCO is looking to put in new lockers for its workers. But they wonder whether the height of the lockers should differ between men and women? Male vs female They also wonder whether the lockers of the people running the morning shift should be bigger than those running the evening shift Workers of the evening shift vs workers of the morning shift

  6. POPULATION inferences are being made about CHEDDERCO is looking to put in new lockers for its workers. But they wonder whether the height of the lockers should differ between men and women? All Workers at CHEDDERCO They also wonder whether the lockers of the people running the morning shift should be bigger than those running the evening shift All Workers at CHEDDERCO

  7. PARAMETER used for comparison CHEDDERCO is looking to put in new lockers for its workers. But they wonder whether the height of the lockers should differ between men and women? median They also wonder whether the lockers of the people running the morning shift should be bigger than those running the evening shift mean

  8. Investigative Questions • CHEDDERCO is looking to put in new lockers for its workers. But they wonder whether the height of the lockers should differ between men and women? • I wonder if there is a difference between the median heights of male workers at CHEDDERCO and the median height of female workers at CHEDDERCO • They also wonder whether the lockers of the people running the morning shift should be bigger than those running the evening shift • I wonder if there is a difference between the mean volume of belongings brought to work by evening shift workers at CHEDDERCO and the mean volume of belongings brought to work by morning shift workers at CHEDDERCO

  9. KEY POINT: You cannot achieve this standard without writing an appropriate Comparative Investigative Question You have not written a comparative question without including ALL of the 4 points listed previously: VARIABLEGROUPPOPULATIONPARAMETER

  10. DO THE ACTIVITY: POSING A PROBLEM WORKSHEET

  11. MAKING AN INFERENCE

  12. Key Components of an Inference When answering the investigative question, you MUST include: • VARIABLE being examined • GROUPS being compared • POPULATION the inference will be made for • PARAMETER used for comparison But these are the same things that come up in the question, so it should be pretty obvious that, in order to actually answer the question, your answer should have much of the same terminology. Missing any of the above constitutes an inability to answer the comparative question. This will lead to a Not Achieved. Missing the word mean/median when answering the question is one of the main slip ups from students. DON’T SLIP UP. Make sure your inference has all of the 4 components given above

  13. Key Components to an Investigative Question You MUST also evidence of some level of uncertainty Eg. I can make the call that… I can make the claim that… NOT I can say with certainty that…. Therefore we know that…

  14. Work your way through the activity:“CDA Making A Call PPT”

More Related