Statistics, PPDAC Exercise · Comparison Problem:
Write your (comparison) investigation question – make sure it is appropriate to the type of data you are using and makes the population clear.
· Write your hypothesis – what you expect to find.
· Extension: give reasons for your hypothesis.
Plan:
· Write a sentence(s) saying what you plan to do for the rest of the investigation.
Data: · Say how your data was collected
· State any sources of error – what mistakes may have been made collecting or recording the data.
· Clean any obvious errors.
Analysis: · Order the data
· Complete a 5-point summary
· Complete appropriate graphs
· Describe and compare your graphs - shape, skew, middle 50% etc
· Compare your statistics from the 5-point summary
· Comment on any extreme values.
Conclusion: · Answer your question – with justification – use your year 10 rule about the median line being inside or outside of the box of the other data set.
· Discuss how good your results would be for making predictions about a wider population.
Write your (comparison) investigation question – make sure it is appropriate to the type of data you are using and makes the population clear.
· Write your hypothesis – what you expect to find.
· Extension: give reasons for your hypothesis.
Plan:
· Write a sentence(s) saying what you plan to do for the rest of the investigation.
Data: · Say how your data was collected
· State any sources of error – what mistakes may have been made collecting or recording the data.
· Clean any obvious errors.
Analysis: · Order the data
· Complete a 5-point summary
· Complete appropriate graphs
· Describe and compare your graphs - shape, skew, middle 50% etc
· Compare your statistics from the 5-point summary
· Comment on any extreme values.
Conclusion: · Answer your question – with justification – use your year 10 rule about the median line being inside or outside of the box of the other data set.
· Discuss how good your results would be for making predictions about a wider population.