12.) your mother gave you $13.32 with which to buy a present. this covered 3/5 of the cost. how much did the present cost?

13.) if the weight of a package is multiplied by 5/7 the result is 40.5 pounds. find the weight of the package.

14.) a stray dog ate 12 of your muffins. that was 3/10 of all of them! with how many did you start?

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