Questions:

At a time of economic growth but political uncertainty, a sample of 40 economists (from the population of all economists) offers the following values for the growth of an economy in the next year:

1.3	3.8	4.1	2.6	2.4	2.2	3.4	5.1
1.8	2.7	3.1	2.3	3.7	2.5	4.1	4.7
2.2	1.9	2.6	2.8	4.3	3.1	4.2	4.6
3.4	3.9	2.9	1.9	3.3	6.2	5.4	3.3
4.5	5.2	3.1	2.5	3.3	3.4	4.4	5.2

1. Display the data using a Stem-and-leaf diagram.

2. Find the median, the lower and upper quartiles, and the modal class.

3. Looking at the shape of your stem-and-leaf diagram. explain briefly whether and why you would expect the population mean to be greater than, or equal to or less than the population median.