Question

The volume of stock is the number of shares traded on a given
day. The following data, in millions represent the volume of Altria
Group stock traded for a random sample of 35 trading days in a
given year.

6.42 23.59 18.91 7.85 7.76 8.51 9.05 14.83 14.43 8.55

6.37 10.30 10.16 10.90 11.20 13.57 9.13 7.83 15.32 14.05

7.84 7.88 17.10 16.58 7.68 7.69 10.22 10.49 8.41 7.85

10.94 20.15 8.97 5.39 8.32

Construct a frequency distribution, histogram and frequency
polygon using 6 classes.

(Show all your calculations for class width)

Answer #1

Maximum = 23.59

Minimum = 5.39

Range = Maximum - Minimum

= 23.59 - 5.39 = 18.2

Class width = Range / # of classes = 18.2 / 6 = 3.03 next integer = 4

So, **Class width = 4**

**________________________________________________________________**

Class Interval | Frequency |

5-9 |
16 |

9-13 |
9 |

13-17 |
6 |

17-21 |
3 |

21-25 |
1 |

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