Standard deviation refers to the
a. statistics used to organize, summarize, and describe sample data
b. value within a given set of data in its original form
c. average distance between variable scores and the mean in a set of data
d. difference between the largest and smallest variable scores in a set of data

Which statement accurately explains whether a reflection over the y-axis and a 270° counterclockwise rotation would map figure acb onto itself? a coordinate plane with figure acb with point a at 1, 1, c at 3, 4 and b at 5, 1 yes, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) yes, a″c″b′ is located at a″(1, 1), c″(3, 4), and b″(5, 1) no, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) no, a″c″b″ is located at a″(1, 1), c″(3, 4), and b″(5, 1)

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

Describe what moves you could use to create the transformation of the original image shown at right