For the following set S = {, , , , , , , , , , }.
1. What is the standard deviation ?
2. What is the absolute deviation ?
3. What is the harmonic mean ?
Sales in book stores Gilbert Joseph has increased between 2014 and 2016 according to the following table
| Store | Percent change from 2014 to 2015 | Percent change from 2015 to 2016 |
|---|---|---|
| Bld Saint Germain | ||
| Rue des Ecoles | ||
| Bld Saint Michel |
4. If the euro amount of sales at store "Bld Saint Michel" was 100,000 euros in 2014, what is the euro amount of sales of that store for 2016?
5. At store "Rue des Ecoles", the euro amount of sales for 2015 was what percent of the euro amount of sales for 2016?
6. Working alone at its constant rate, machine A produce k bike parts in minutes. Working alone at its constant rate, machine B produces k bike parts in 20 minutes. How many minutes does it take machines A and B, working simultaneously at their respective constant rates, to produce k bike parts ?
7. A cookie is sold euros with tax. The VAT rate is . What is the price without tax ?
8. GDP of Wonderland had the following evolution : in 2013, in 2014, in 2015, in 2016.
What is the average growth rate from 2013 to 2016 ?