In a boxplot, the line inside the box represents: a) The median of the dataset b) The mean of the dataset c) The mode of the dataset d) The range of the dataset

Does the mean represent the center of the data?

4.3) •VA report from Texas Transportation Institute (Texas A&M University System 2005) on Congestion Re- duction Strategies looked into the extra travel time (due to traffic congestion) for commute travel per traveler per year in hours for different urban areas. Below are the data for urban areas that had a population of over 3 million for the year 2002. Extra Hours per Traveler per Year Urban Area Los Angeles San Francisco 98 75 Washington DC Atlanta 66 64 Houston 65 Dallas, Fort Worth Chicago Detroit 61 55 54 Miami 48 Boston 53 New York 50 Phoenix 49 Philadelphia 40 4. Compute the mean and median values for extra travel hours. Based on the values of the mean and median, is the distribution of extra travel hours likely to be approximately symmetric, positively skewed, or negatively skewed?

Use the following table to answer Questions 11 – 14. The numbers represent the points scored in 20 high school basketball games. 25 33 33 43 44 49 50 53 54 54 54 54 57 58 62 63 63 65 66 69 11. Construct a frequency distribution table of the data. Use class width of 10 and start first class with 20.

Milaaan

A back-to-back stem-and-leaf plot compares two data sets by using the same stems for each data set. Leaves for the first data set are on one side while leaves for the second data set are on the other side. The back-to-back stem- and-leaf plot available below shows the salaries (in thousands) of all lawyers at two small law firms. Complete parts (a) and (b) below. Click the icon to view the back-to-back stem-and-leaf plot. (a) What are the lowest and highest salaries at Law Firm A? at Law Firm B? How many lawyers are in each firm? At Law Firm A the lowest salary was $ At Law Firm B the lowest salary was $ and the highest salary was $ and the highest salary was $

2. Create a box and whisker plot based on the data below: 12 11 15 12 19 20 19 14 18 15 16

Use a stem-and-leaf plot to display the data, which represent the numbers of hours 24 nurses work per week. Describe any patterns. 40 30 40 43 48 35 40 36 52 32 36 40 35 25 40 36 40 36 40 33 40 32 38 49 Determine the leaves in the stem-and-leaf plot below. Key: 313 = 33 Hours worked 2 What best describes the data? A. Most nurses work between 40 and 50 hours per week, inclusive. OB. Most nurses work over 40 hours per week. OC. Most nurses work between 30 and 40 hours per week, inclusive. OD. Most nurses work under 40 hours per week. 0

A scatter diagram can be used to visualize a pattern to the data. O True O False

A: {3, 5, 5, 5, 7} B: {5, 7, 7, 9, 9} median of A median of B V