Chapter 13 - Variability and Data Distributions
LEsson 13.1 PAtterns in Data
Objective: I can describe the overall patterns in data, including clusters, peaks, gaps, and symmetry.
Dot Plot: a statistical chart consisting of data points plotted on a simple scale
Histogram: a bar graph that shows the frequency of data in intervals
LEsson 13.2 - Box Plots
Objective: I can display data in box plots
Lower Quartile: the median of the lower half of a data set
Upper Quartile: the median of the upper half of a data set
Box Plot: a type of graph that shows how data are distributed by using the least value, the lower quartile, the median, the upper quartile, and the greatest value of the data set.
Median: the middle number in a set of data that are arranged in order, or the average of the two middle values if the number of data values is even
LEsson 13.3 - Investigate * Mean Absolute Deviation
Objective: I understand mean absolute deviation as a measure of variability from the mean.
Mean Absolute Deviation: the mean of the distances between the values of a data set and the mean of the data set
Lesson 13.4 - Measures of Variability
Objective: I can summarize a data set by using range, interquartile range, and mean absolute deviation.
Measures of Variability: a single value used to describe how spread out a set of data values are
Range: the difference between the greatest value and the least value in a data set
Interquartile Range: the difference between the upper quartile and the lower quartile of a data set.
LEsson 13.5 - Choose appropriate measures of center and variability
Objective: I can choose appropriate measures of center and variability to describe data, and justify the choice.
LEsson 13.6 - Apply measures of center and variability
Objective: I recognize what measures of center and variability indicate about a data set.
Lesson 13.7 - Describe Distribution
Objective: I can describe the distribution of a data set collected to answer a statistical question.
Distribution: the overall shape of the graph of a data set
Statistical Question: a question that asks about a set of data that can vary
Lesson 13.8 - Problem Solving * Misleading Statistics
Objective: I can draw conclusions about the distribution of a data set by using the strategy work backward.