HOME WORK -2 L 12
8
1. The area of a blackboard is 1 square yards. A poster's area is square yards. Find the unit rate
and explain, in words, what the unit rate means in the context of this problem. Is there more than
one unit rate that can be calculated? How do you know?

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