For the tasks 1-8, consider the following data:

7.2, 1.2, 1.8, 2.8, 18, -1.9, -0.1, -1.5, 13.0, 3.2, -1.1, 7.0, 0.5, 3.9, 2.1, 4.1, 6.5 In Tasks 1-8 you are asked to conduct some computations regarding this data. The computation should be carried out manuallyfor the tasks #3 and #5. All the steps that go into the computation should be presented and explained.

Tasks

Data:

1. Using the list of 17 numbers at the top of the page, the median of this data, rounded to two decimal places, is: _____.

2. If you find the median using the original method (paper and pencil), you have to arrange the values into numeric order (True/False). ______________________

3. (The calculations MUST be done manually, do not use R) The interquartile rang for this data is (round each value to 3 decimal places): _______.

4. The formula for calculating the interquartile range is_____________ (show the formula and a citation to the source that you used).

5. (The calculations MUST be done manually, do not use R) Using techniques that we studied in this course, the upper and the lower cut-off points (rounded to three decimal places) for identifying outliers in the given data sample are: ______ and ______ (this is not a request to show any outliersjust the cut-off points that would determine what constitutes an outlier.) You may round to three decimal places.

6. The summary () command shows a list of outliers, if there are any (True/False): ______________________

7. The list of outlier values is: _____________ (if there are none, write "NA").

8. The standard deviation of the list of 17 numbers is (round to 3 decimal places): ______________