select the scenario that correctly represents the given graph.

a.
the weight of a radioactive material is halved every minute.
b.
the number of fish in a pond doubles every year.
c.
the price of a television decreases by 20% of its original price every year.
d.
the number of students registering for drama classes decreases by 20 students every hour.

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