A certain state uses the following progressive tax rate for calculating individual income tax:
Tax Bracket ($) Rate
3%
0 - 10,000
10,001 - 50,000
50,001 - 100,000
5%
5.5%
Calculate the state income tax owed on a $40,000
per year salary.
tax = $1?1

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