# Statsuworld19

rename
gubavula's
version from
2016-10-22 21:40

## Section

Question | Answer |
---|---|

Mean | Add all the numbers together then divide by how many numbers |

Median | Put in order and then check for the middle number |

Mode | Highly repeated number the one that never changes |

How many subjects are there in Drug A group | Absolute risk reduction 6% - Standard therapy 4% -> 2 -> Number of pts 24 / 2 -> 12 X 100 -> 1200 |

Pt neither dr is aware who is taking placebo or actual drug prevents what | Observer bias |

Recently Grandparent passed away 2 months ago and 5yr old girl is talking to her in a room with empty chair | Normal behavior Under age 6 |

Probabiliy pt truly does not have a disease | Negative predictive value |

Sensitivity | Ppl test + and have the disease |

Specificity | Ppl test - and DO not have disease |

PPV | Probability of person who tested + will have the disease |

NPV | Probability of person who tested - will not have the disease |