Statistics, PPDAC Exercise · Relationship Problem:
Write your (Relationship) investigation question about 10XMA– 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 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: · Draw your scatterplot, putting your independent (cause) variable (if any) on the x-axis.
· Put in a line of best fit – one that best represents the direction of your data. Highlight any unusual values to discuss later.
· Use TASgu to describe what the graph tells you. Justify everything you say if possible! Eg. It is a positive relationship because it goes upwards from left to right. It is a strong relationship because the dots are all close to my trendline etc.
· Extension: Find the equation of your line of best fit – using y=mx+c
Conclusion: · Answer your question – summarise your analysis.
· Extra for Experts: Explain what your equation means.
Write your (Relationship) investigation question about 10XMA– 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 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: · Draw your scatterplot, putting your independent (cause) variable (if any) on the x-axis.
· Put in a line of best fit – one that best represents the direction of your data. Highlight any unusual values to discuss later.
· Use TASgu to describe what the graph tells you. Justify everything you say if possible! Eg. It is a positive relationship because it goes upwards from left to right. It is a strong relationship because the dots are all close to my trendline etc.
· Extension: Find the equation of your line of best fit – using y=mx+c
Conclusion: · Answer your question – summarise your analysis.
· Extra for Experts: Explain what your equation means.