Answer S^{2} = sample standard deviation = 18**.**05494011
and = sample mean = 18**.**42635659

Here is how:

What is the variance and mean of the population from which the following data was sampled:

Value |
Frequency |

27 |
102 |

13 |
1 |

0 |
7 |

-12 |
13 |

24 |
0 |

-39 |
6 |

Enter Data

Value |
; |
Frequency |
Enter |

[2] [7] |
[SHIFT] [,] |
[1] [0] [2] |
[M+] |

[1] [3] |
[SHIFT] [,] |
[1] |
[M+] |

[0] |
[SHIFT] [,] |
[7] |
[M+] |

[(-)] [1] [2] |
[SHIFT] [,] |
[1] [3] |
[M+] |

[2] [4] |
[SHIFT] [,] |
[0] |
[M+] |

[(-)] [3] [9] |
[SHIFT] [,] |
[6] |
[M+] |

Find Variance based on sample:

[SHIFT] [3] [=] to get the sample standard deviation (18**.**05494011)

[X^{2}] [=] to get the sample variance (325**.**9808624)

Find Mean:

[SHIFT] [1] [=]

Your display should read 18**.**42635659