# Complaints

The table is given:

1.1 What percentage of complaints were resolved within two weeks?

1.2 calculate the mean number of days to resolve these complaints.

1.3 calculate the modal number of days to resolve these complaints.

1.4 determine the standard deviation.

days | complaints |
---|---|

0-4 | 2 |

5-9 | 4 |

10-14 | 8 |

15-19 | 6 |

20-24 | 4 |

25-29 | 3 |

30-34 | 3 |

1.1 What percentage of complaints were resolved within two weeks?

1.2 calculate the mean number of days to resolve these complaints.

1.3 calculate the modal number of days to resolve these complaints.

1.4 determine the standard deviation.

### Correct answer:

**Showing 1 comment:**

**Math Teacher**

We checked the solution with our statistical calculator:

https://www.hackmath.net/en/calculator/frequency-table?input=0-4+5-9+10-14+15-19+20-24+25-29+30-34%0D%0Af%3A+2+4+8+6+4+3+3

data we enter as grouped frequency table:

0-4 5-9 10-14 15-19 20-24 25-29 30-34

f: 2 4 8 6 4 3 3

https://www.hackmath.net/en/calculator/frequency-table?input=0-4+5-9+10-14+15-19+20-24+25-29+30-34%0D%0Af%3A+2+4+8+6+4+3+3

data we enter as grouped frequency table:

0-4 5-9 10-14 15-19 20-24 25-29 30-34

f: 2 4 8 6 4 3 3

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