Table of Contents

• Prequiz...
• 1: Beyond the scatterplot
• 2: Practice with quantitative and qualitative
• 3: How to make a bar chart
• 4: How to make a fancier bar chart
• 5: Info lost and found
• 6: Error bars
• 7: Practice with error bars
• 8: And another way: the standard error
• 9: The same graph both ways
• 10: Review

Review

For a scatterplot	For a barchart
Choose x and y	same!
Label x, y, and top	same! (except x usually has no "units")
Decide minimums and maximums	only for y -- and include the error bars
Decide distance for ticks	only for y
Make a legend	same
Add data!	make rectangles, not dots

Choosing between SD and SE

SD	SE
How far members of the population deviate from the average	How far off your estimate of the mean is
Quantifies the population	Quantifies your experiment
Does NOT depend on sample size	DOES depend on sample size (a lot!)
Use to characterize the population	Use to test your results

 

 

 

If you want a printer-friendly version of this module, you can find it here in a Microsoft Word document. This printer-friendly version should be used only to review, as it does not contain any of the interactive material, and only a skeletal version of problems solved in the module.