### Question:

12.

If two groups of numbers have the same mean, then

their standard deviations must also be equal. | |

their medians must also be equal. | |

their modes must also be equal. | |

other measures of location need not be the same |

13.

The Sample Mean

can never be negative. | |

can assume any value between the highest and the lowest value in the sample. | |

can never be zero. | |

is always smaller than the mean of the population from which the sample was taken |

### Answer:

Solution :

12)

If two groups of numbers have the same mean, then other measures of location need not be the same

13)

The sample mean can never be negative .