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Unit 1

Data Displays and Number Systems

TermDefinition
Data Information that is gathered by counting, measuring, questioning, or observing
Statistics The study of numerical data: collecting, organizing, and analyzing data to interpret it and answer questions.
Statistical Question A question that would be answered by collecting or analyzing data.
Range The difference between the maximum and the minimum in a data set is a measure of how spread out a distribution is.
Variability How spread out the values in a data set are.
Dot plot a number line long enough to encompass all numbers in a sample, showing a dot over the position corresponding to each number.
Maximum highest or greatest amount or value.
Minimum lowest or least amount or value
Distribution The arrangement and frequency of data values in a data set. A distribution may be summarized with measures of center and variability.
Median a type of average which is the middle value of an ordered set of data values.
Mode a type of average
Average An average is a measure used to find the location of the middle (central tendency) of a data set.
Mean usually called the average.
Balance Point is the mean
Measure of Center A value representing what is typical or central to a data set. Mean and median are both measures of center.
Outlier a value far away from most of the rest in a set of data
Histogram a graph using bars to represent frequency distribution where,
Bin An interval for collecting, aggregating, organizing, or graphing
Cluster numbers which tend to crowd around a particular point in a set of data values.
Created by: user-1846846
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