Relative and absolute change
in 2010 there were 1,845 students at ecc. in 2013 there were 2,430 students.
answer every answer as a positive number. round to the nearest 10th.
1. what is the absolute change in the student population at ecc over this period?
this is a:
student increase
or
student decrease
2. what is the relative change in the student population at ecc over this period?
% this is a:
(a) percent increase
or
(b) percent decrease

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?