Forty-five specimens of a certain type of powder were analyzed for sulfur trioxide content. Following are the results, in percent. The list has been sorted into numerical order.

14.1 |
14.4 |
14.7 |
14.8 |
15.3 |
15.6 |
16.1 |
16.6 |
17.3 |

14.2 |
14.4 |
14.7 |
14.9 |
15.3 |
15.7 |
16.2 |
17.2 |
17.3 |

14.3 |
14.4 |
14.8 |
15.0 |
15.4 |
15.7 |
16.4 |
17.2 |
17.8 |

14.3 |
14.4 |
14.8 |
15.0 |
15.4 |
15.9 |
16.4 |
17.2 |
21.9 |

14.3 |
14.6 |
14.8 |
15.2 |
15.5 |
15.9 |
16.5 |
17.2 |
22.4 |

a. Construct a stem-and-leaf plot for these data.

b. Construct a histogram for these data.

c. Construct a dotplot for these data.

d. Construct a boxplot for these data. Does the box- plot show any outliers?

Answer

Step 1 of 4</p>

a) The stem and leaf plot is

14/ 12333444467788889

15/ 0023344567799

16/ 124456

17/ 2222338

18/

19/

20/

21/ 9

22/ 4

Here left side values represents stem.

And right side values represents leaf.

Step 2 of 4</p>

b)Draw histogram in the excel by following the steps

Select the data range - Select insert - select column - Select first graph in the list

Then we will get histogram