Irene purchased some earrings that regularly cost $55 for a friends birthday. Irene used 20% OFF" coupon Irene's friend did not like the gift so she tried to return the earrings.
She did not have the receipt so the store would only give her store credit for 50% of the
purchase price. How much credit did Irene's friend receive?
789.3

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