Measures+of+Center+and+Variability

= 7-SP4 = =Use measures of center and measures of variability for numerical data from random samples to draw informal comparative references about two populations.=
 * Example: Decide whether the words in a chapter of a seventh-grade science book are generally longer than the words in a chapter of a fourth-grade science book.

Sixth Grade > Seventh Grade > Eighth Grade Algebra I
 * ACOS 2009 Correlation **
 * 8 - Determining the distance between two points on a scale drawing or a map using proportional reasoning.
 * 12.1 - Using a data set to create charts and graphs, including histograms, frequency tables, and stem-and-leaf plots, to display measures of central tendency.
 * 13 - Use given and collected data from samples or populations to construct graphs and interpret data.
 * 13.2 - Determining the measure of central tendency that is the most appropriate for a given situation.
 * 12 - Compare various methods of data reporting, including scatterplots, stem-and-leaf plots, histograms, box-and-whiskers plots, and line graphs, to make inferences and predictions.
 * 13 - Identify characteristics of a data set, including numerical or categorical and univariate or bivariate.


 * CMP2 Correlation **
 * **Book** ||= **Investigation** || **Objective** ||
 * Data Distributions ||= 2-4 || 7-SP4 ||

North Carolina's Lesson for Learning X Marks the Spot - 7SP3, 7SP4
 * Resources **
 * I can create a dot plot.
 * I can find mean, median, and mode.
 * I can find the lower and upper extremes, lower and upper quartiles, and the range.
 * I can create a box plot.
 * I can interpret data in a box plot.

Skills Measures of center and range were found in ACOS 2003/2009. Interquartile range, mean absolute deviation, and standard deviation are new. Interquartile range has moved down from 8th grade. Deviation has moved down from high school.
 * My Humble Opinion **
 * Determine measures of center (mean, median, mode) and measures of variability (range, interquartile range, mean absolute deviation or variance, and standard deviation)