2.1a Percentiles and z-scores Read pp. 8591
What is a percentile?
Describes the percentage of data that is
below the particular data point.
incomes for the 50 states and the District of
Columbia.
a) California, with a median household income of
On a test,
2.1b Transforming Data and Density Curves Read pp. 9297
What is the effect of adding or subtracting a constant to/from each observation?
What is the effect of multiplying or dividing each observation by a constant?
Example: Taxi Cabs
In 2010, Taxi Cabs in