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C2_Chapter 8

Chapter 8 Vocabulary

Analyze To describe, summarize, and compare data.
Bar Graph A graphic form using bars to make comparisons of statistics.
Biased Sample A sample drawn in such a way that one or more parts of the population are favored over others.
Cluster Data that are grouped closely together.
Convenience Sample A sample which includes members of the population that are easily accessed.
Data Pieces of data, which are often numerical.
Histogram A special kind of bar graph in which the bars are used to represent the frequency of numerical data that have been organized in intervals.
Leaf The second greatest place value of data in a stem-and-leaf plot.
Line Graph A type of statistical graph using lines to show how values change over a period of time.
Line Plot A diagram that shows the frequency of data. An × is placed above a number on a number line each time that number occurs in a set of data.
Mean The sum of the data divided by the number of items in the data set.
Measures of Central Tendency Numbers that are used to describe the center of a set of data. These measures include the mean, median, and mode.
Median The middle number in a set of data when the data are ordered from least to greatest. If the data has an even number of items, the median is the mean of the two numbers closer to the middle.
Mode The number or numbers that appear most often in a set of data. If there are two or more numbers that occur most often, all of them are modes.
Outlier The number or numbers that appear most often in a set of data. If there are two or more numbers that occur most often, all of them are modes.
Population A specific group of people
Range The set of output values for a function.
Sample A randomly selected group chosen for the purpose of collecting data.
Scatter Plot In a scatter plot, two sets of related data are plotted as ordered pairs on the same graph.
Simple Random Sample A sample where each item or person in the population is as likely to be chosen as any other.
Statistics Deals with collecting, organizing, and interpreting data.
Stem The greatest place value common to all the data values is used for the stem of a stem-and-leaf plot.
Stem-and-Leaf Plot A system used to condense a set of data where the greatest place value of the data forms the stem and the next greatest place value forms the leaves.
Survey Designed to collect data about a specific group of people
Unbiased Sample A sample representative of the entire population.
Voluntary Response Sample A sample which involves only those who want to participate in the sampling.
Created by: Mrs_Irish