Algebra 1 Online! Henrico County Public Schools, Virginia

Module - Data Analysis
Introduction - Picture This

 Lessons 1- Adding, Subtracting, and Scalar Multiplication of Matrices 2- Measures of Central Tendency 3- Box and Whisker Plots 4- Best Fit Lines and Curves 5- Deviation and Z-Scores 6- Module Review

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.

 Fuel Economy Model A Model B Model C EPA estimate city/highway 19/29 18/26 19/24 195-mile trip 29 mpg 27 mpg 25 mpg

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.
• box-and whisker plot
• interquartile range
• lower quartile
• mean
• median
• mode
• outlier
• range
• statistics
• upper quartile
• matrix
• Display and interpret data on a stem-and-leaf 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 box-and-whisker plot.
• Use matrices to organize and manipulate data, including matrix addition, subtraction, and scalar multiplication.
 HCPS 2002-