Circle A and circle B are similar.
a. What is the similarity ratio of circle A to circle
B?
b. What is the circumference of each circle? Leave
answers in terms of .
c. What is the ratio of the Circumference of circle B
to the Circumference of circle A? Simplify your
ratio.

1. why is a frequency distribution useful? it allows researchers to see the "shape" of the data. it tells researchers how often the mean occurs in a set of data. it can visually identify the mean. it ignores outliers. 2. the is defined by its mean and standard deviation alone. normal distribution frequency distribution median distribution marginal distribution 3. approximately % of the data in a given sample falls within three standard deviations of the mean if it is normally distributed. 95 68 34 99 4. a data set is said to be if the mean of the data is greater than the median of the data. normally distributed frequency distributed right-skewed left-skewed