
Every day when you read newspapers or magazines, watch TV, or listen
to the radio, you are bombarded with data about the national economy,
sports, the top ten music videos, and so on. Interpreting this data
is important to your understanding of the world around you. A branch
of mathematics called statistics helps provide you with methods
for collecting, organizing, and interpreting data.
Data can be organized and presented in numerous ways. One of the
most common ways is to use a table or chart. Using the following
chart, identify the model of car that gets the best highway fuel
economy.




EPA estimate
city/highway








Upon completion of
the activities in this unit, you should be able to:

Use the following terms in a written paragraph
to describe the key concepts of this unit.

boxand whisker plot

interquartile range

lower quartile

mean

median

mode

outlier

range

statistics

upper quartile

matrix

Display and interpret data on a stemandleaf
plot.

Calculate and interpret the mean, median, and
mode of a set of data.

Calculate and interpret the range, quartiles,
and the interquartile range of a set of data.

Display and interpret data on a boxandwhisker
plot.

Use matrices to organize and manipulate data,
including matrix addition, subtraction, and scalar multiplication.
