The standard deviation of the sample values in Exercise 1 is 5.0 min. What is the variance (including units)?

Answer:

Step 1 of 1

SL. No |
x |
(x - |

1 |
1550 |
92.16 |

2 |
1642 |
6789.76 |

3 |
1538 |
466.56 |

4 |
1497 |
3918.76 |

5 |
1571 |
129.96 |

Sum |
7798 |
11397.2 |

Average |
1559.6 |

A statistic used as a measure of the dispersion or variation in a distribution, equal to the square root of the arithmetic mean of the squares of the deviations from the arithmetic mean.

The standard deviation of a sample is known as S and is calculated using:

s = 53.3788

Variance = (53.3788)2

= 2849.2962