Hi,

My all dataset is annual but for the dependent variable, I want to calculate the Standard deviation of CFO over a period of 12 quarters. My dataset for CFO is looking like this. Please help me as this is my first post.

My all dataset is annual but for the dependent variable, I want to calculate the Standard deviation of CFO over a period of 12 quarters. My dataset for CFO is looking like this. Please help me as this is my first post.

date | code | cashflow |

2007q1 | 1 | 0.457409 |

2007q2 | 1 | 0.345435 |

2007q3 | 1 | 0.923858 |

2007q4 | 1 | 0.435334 |

2008q1 | 1 | 0.59045 |

2008q2 | 1 | 0.49754 |

2008q3 | 1 | 0.55433 |

2008q4 | 1 | 0.948373 |

2009q1 | 1 | 0.94955 |

2009q2 | 1 | 0.093455 |

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