An analyst must decide between two different forecasting
techniques for weekly sales of roller blades: a linear trend
equation and the naive approach. The linear trend equation is
F* _{t}* = 124 + 2.1

t |
Units Sold |

11 | 148 |

12 | 149 |

13 | 148 |

14 | 145 |

15 | 153 |

16 | 152 |

17 | 152 |

18 | 159 |

19 | 161 |

20 | 165 |

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BASED ON MAD AND MSE, NAIVE METHOD IS GOOD FOR THIS PROBLEM ...