SlideServe
Télécharger Obtenir Pro
Menu
Accueil Pro
Préférences
ApparenceLight Aide et commentaires
© SlideServe · v2026

TALK BACK TO STATISTICS

eloise avatar
eloise
14 diapositives · 378 Views · Aug 05, 2012

TALK BACK TO STATISTICS. Achievement Standard 2.11. Evaluate a statistically based report with justification and insight Identify sampling and possible non-sampling errors in surveys including polls. Statistical Literacy ?.

TALK BACK TO STATISTICS - slide 1
01 / 14TALK BACK TO STATISTICS
1 / 17

Télécharger la présentation

TALK BACK TO STATISTICS
Une image / un lien ci-dessous est fourni (tel quel) pour télécharger la présentation

Politique de téléchargement : le contenu du site vous est fourni TEL QUEL pour votre information et votre usage personnel ; il ne peut être vendu, concédé sous licence ni partagé sur d’autres sites sans l’accord de son auteur.Le contenu vous est fourni TEL QUEL, pour votre information et votre usage personnel uniquement. Téléchargez la présentation en cliquant sur ce lien. Lors du téléchargement, si vous ne parvenez pas à télécharger une présentation, l’éditeur a peut-être supprimé le fichier de son serveur.Pendant le téléchargement, si vous ne parvenez pas à obtenir une présentation, le fichier a peut-être été supprimé par l’éditeur.

F I N

Plus de contenu associé

Transcription de la présentation

  1. TALK BACK TO STATISTICS

  2. Achievement Standard 2.11 • Evaluate a statistically based report with justification and insight • Identify sampling and possible non-sampling errors in surveys including polls

  3. Statistical Literacy ? • “ statistical literacy relates to two interrelated components, primarily (a) people’s ability to interpret and critically evaluate statistical information, data-related arguments, or stochastic phenomena,…..and (b) their ability to discuss or communicate their reactions to such statistical information. “ • ( Gal, 2002) • "…understanding the basic language of statistics (e.g., knowing what statistical terms and symbols mean and being able to read statistical graphs), and understanding some fundamental ideas of statistics." • ( Gaise Report, 2007) 

  4. Statistical Literacy • “ …the ability to interpret and evaluate critically statistical information in a variety of contexts and from a variety of media. It is also the ability to communicate that interpretation in a way that can impact decision-making” • ( Watson, 2006)

  5. 2.11 Overview • Prior knowledge • Student preparation for Unit • Importance of Context • Evaluation of Reports • Different forms of assessment delivery • Challenges

  6. CONTEXT • Contextual knowledge is essential • Select a context that is appropriate for your students • In practice assessments encourage students to research topic before starting evaluation of report • Share knowledge discovered in brainstorm session • Potential for cross-curricular project

  7. EVALUATION OF REPORTS • Develop a set of worry questions to include sampling problems, questionnaire design & delivery etc. • Explore probability misconceptions . For example, equiprobability bias, expression of probabilities • Research different types of data display. Technology allows students to be more innovative than the traditional bar chart, histogram, pie chart etc. • Get students to write their own reports of a data set complete with headlines and charts.

  8. Who do you believe? • Link found between cell phone use and increase in brain tumours - WHO No evidence cell phones cause cancer : US oncologist - The Hindu BusinessLine News

  9. “Worry Questions” • Examples • Who is the data about? Who or what was studied? • Where did the data come from? Who paid for the investigation or research? How was it collected? • Was a sample used? How was it sampled? Was the sample randomly selected and is it representative? • How reliable or accurate is the data? What measurements or questions were asked? Have measurements or terms been defined? • What is the shape of the distribution of the data? Have they used the correct summary statistics for the type of distribution? • Are there any outliers? What can you conclude from any outliers? • If there is a graph drawn – has it been drawn appropriately? • Are the claims made sensible and supported by the data? If a claim is made is it justified by facts? • Can you suggest any extra information or calculations that should have been carried out in order to evaluate the issue in question? • Are there any alternative explanations from causes not discussed that might result in a different interpretation of the data?

  10. Assessment • COMMUNICATION ! • Powerpoint slideshow • Written report • Wiki page • Poster • Oral presentation – speech • Innovative data display

  11. Challenges • Different methods of assessment delivery • Authenticity of work • Potential for cross-curricular study • Availability of resources

  12. Useful Websites Evaluation of statistical reports • http://www.mercurynie.com.au/mathguys/mercury.htm • http://www.simerr.educ.utas.edu.au/numeracy/default.html • www.statschat.org.nz • www.offsettingbehaviour.blogspot.com • www.thestatsblog.wordpress • Innovative Data Display • www.coolinfographics.com • www.infographicsshowcase.com • http://www.smashingmagazine.com/2007/08/02/data-visualization-modern-approaches/

  13. Over to You ! • GROUP ACTIVITY • TWO REPORTS with apparently opposing views. Is the evidence convincing ? • Report Back – Are you convinced by the headline. What evidence was presented to convince you? • Are you sceptical of the headline claims ? What evidence was presented that you are unsure of ? • CONCLUSION – Will the article affect the way you use a cell-phone ?

  14. Importance of Statistical Literacy ? HG WELLS “ Statistical thinking will one day be as necessary for efficient citizenship as the ability to read or write.” ( end of 19th century)