# 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.*

Copyright University of Maryland, 2007

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