## anonymous one year ago a

1. anonymous

need the table

2. anonymous

well for part b the answer would be w because the average represents the average ant school w has the highest mean

3. anonymous

not sure what irq and that last column represent

4. anonymous

okay well for part a you have to use the last column do you understand what standard deviation represents?

5. anonymous

okay well just incase you don't it basically means how accurate a value is https://en.wikipedia.org/wiki/Standard_deviation

6. anonymous

the higher the deviation the less accurate

7. anonymous

basically which of the three schools has the lowest standard of deviation

8. anonymous

by the way this is the first time iv ever heard about standard deviation so im not 100 percent sure i would read the wiki if i was you

9. anonymous

yeah

10. campbell_st

well for this question I think you need to be looking at measures of spread so I'd be looking for smallest range, IQR and standard deviation as these all measure the spread of a data set. that, for me would be the most consistent

11. campbell_st

My answer for part A is above...

12. jim_thompson5910

Rule: the lower the standard deviation, the closer the scores get and clump together. The closer the scores, the more consistent the data.

13. jim_thompson5910

The symbol $$\Large \sigma$$ is the greek letter symbol sigma (lower case) it represents the standard deviation

14. jim_thompson5910

yes