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# Data Management

Question | Answer | Instuctions | Example |
---|---|---|---|

What is mean? | the average number | Step1: add all the number Step2: divide the total number by the number of groups | 15,12,13,15,20,15,19 [set of data] 15 is one group 15+12+13+15+20+15+19= 109 [total #] 109 divided by 7 [number of groups] = 15.5 [the average] |

What is median? | the middle number | Step1: put the numbers from least to greatest Step2: go to the middle of the set of data | 15,12,13,15,20,15,19 [set of data] 12,13,15,15,15,19,20 [order least to greatest] middle number 15 |

What is mode? | the most frequent number | Step1: tally the number of times each number appears in the set of data Step2: the number with the most tallies is the most frequent number | 15,12,13,15,20,15,19 [set of data] 12=| 13=| 15=||| 19=| 20=| 15 is the most frequent number |

What is range? | the difference between the lowest and biggest number | Step1: find the lowest and biggest number Step2: subtract the lowest number from the biggest number | 15,12,13,15,20,15,19 [set of data] lowest number: 12 biggest number: 20 20-12=8 8 is the answer |

What would you do if there was no repeated number? | There would be no mode so you would write "no mode" | No Steps Required | 15,14,12,18,30 [set of data] No Mode |

What is the mean? 45,12,3,8,78,12,15 | 24.7 | No Steps Required | No Steps Required |

What is the median?4,12,19,22,45,66 | 20.5 | No Steps Required | No Steps Required |

What is the mode? 12,15,28,15,95,12,14,70,15 | 15 | No Steps Required | No Steps Required |

What is the main rule when you do median? | Put the numbers in order | No Steps Required | No Steps Required |

What is the range? 12,14,25,28,39,78,99 | 87 | No Steps Required | No Steps Required |

What is the median? 15,16,39,57,89,93,95 | 57 | No Steps Required | No Steps Required |

What do you do for range? | subtract the lowest number from the biggest number | No Steps Required | No Steps Required |

What do you do if there is no middle number? | You use the two middle numbers and put all the that are between them in order and choose that middle or go into decimal land | Step1: take the 2 middle numbers Step2: put the smaller number from the 2 and put the numbers in order from that number to the other number Step3: find the middle in that set of data, if there is stiil no number go into decimal land | 15,12,13,15,13,20,15,19 [set of data] 13,14,15 [13 and 15 are the 2 numbers from the other set of data] 14 is the middle number |

What do you do if there are 2 answers for the most frequent number? | You write both of the answers down | No Steps Required | 15,12,13,12,14,15,18 [set of data] 2 answers are 12 and 15 |