Calculate from data table

The table below shows the profit (in thousand) of the zouk corp. in a year of period.

January to July | July to December |

10 | 35 |

60 | 45 |

50 | 30 |

30 | 35 |

40 | 40 |

25 | 25 |

Find the mean for each of the group.

I'm not really sure what is the x, n and frequency.

Re: Calculate from data table

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Re: Calculate from data table

Re: Calculate from data table