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Ask & Brainstorm Often
Ask & Brainstorm Often
Getting advice and guidance during the journey - Ask sooner rather than later.
Check in - perhaps you are missing an awesome opportunity.
Using statistical language is complex, seek clarification often.
Do not go ahead with a survey without checking in. Best to do it RIGHT ... ONCE!
Quick Access to these Key Resources:
PPDAC
PPDAC
Problem - What is your question?
Problem - What is your question?
Plan - How are you planning to answer it?
Plan - How are you planning to answer it?
Data - This may come from a survey, observations or from research.
Data - This may come from a survey, observations or from research.
Analysis - Graphs and Statistics (These depend on the type of data, which determines the type of graph).
Analysis - Graphs and Statistics (These depend on the type of data, which determines the type of graph).
Conclusion - Answer your question, backing up your claims with evidence from the analysis section.
Conclusion - Answer your question, backing up your claims with evidence from the analysis section.
Reflection (Extra for experts)
Reflection (Extra for experts)
What did this investigation make you wonder?
What would you want to find out now, if you had more time?
How would you do it differently, if you could turn back time, knowing what you know now?
Statistical investigation: Level 4 NZC
Statistical investigation: Level 4 NZC
Plan and conduct investigations using the statistical inquiry cycle:
determining appropriate variables and data collection methods
gathering, sorting, and displaying multivariate category, measurement, and time-series data to detect patterns, variations, relationships, and trends
comparing distributions visually
communicating findings, using appropriate displays.
Vocab
Vocab
Statistics is the discipline that concerns the collection, organization, analysis, interpretation and presentation of data.
Discuss features of data displays using mean, median and mode and looking at the range where appropriate.
Discrete data or Continuous data?
Qualitative or Quantitative data?
Numerical or Categorical?
Middle 50%
Lower quartile
Upper quartile.
Scatter Graphs, Correlation, Line of Best Fit.
Distribution, variables, sample, population, bias, representative, inference...
Surveys
Surveys
Desk Check: What happens when you try to fill it in? How long does it take? (Proof Reading).
Pilot Survey: What happens when friends and family fill it in? What needs changing? (Trial with a small number).
Conducting a Survey. (The basics).
Question types: Quite nice to have a variety of types.
Open or Closed
Multiple choice or Tick box
Numerical or categorical
Qualitative or Quantitative
Scales produce numerical data, so are MUCH better than asking Yes or No type questions.
Google Forms have scales, tick boxes, multi-choice and short answer questions. You can also validate an answer, for example ensure it is a number.
A questionnaire is a series of questions asked of a group of people in order to get statistically useful information. Questionnaires are frequently used in marketing and social research.
A survey is when we give a questionnaire to a group of people (our target population ).
A census , is when all people in a population complete a questionnaire .
Surveys, interviews and questionnaires are one way of collecting data. You could also record data from observations, experiments or source data from a reliable source.
Thanks to Liz Sneddon for the above image. Click on the image to locate the source.
Graphs & Mathematics
Graphs & Mathematics
Statistical graphs can be drawn by hand or created using software.
Check out these links for inspiration:
Types of Investigations
Types of Investigations
Big Ideas:
Big Ideas:
Why? What is the point? What is your purpose?
You have the freedom to drive your investigation.
You may locate data on the internet.
You may collect data by observation, experiment or survey.
You may get data from any combination of the above.
You will NOT tick ALL the boxes for an NZC level. You are not doing an experiment, a survey, a time series investigation, a comparison investigation AND a relationship investigation. You ARE doing what has a PURPOSE for YOUR investigation.
Links:
Links:
These links will be added to during term 3, responding to student interest:
Your exhibition might include a coding element. Please ask me to brainstorm with you, as it might be easier than you expect.
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