Frankie is practicing for a 5-kilometer race. His normal time is 31 minutes 13 seconds. Yesterday it took him only 29 minutes 50 seconds.
How much faster was Frankie yesterday than his normal time?
Frankie was
minute
seconds faster.

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