Data and Statistics Terms Flashcards
A value much greater or much less than the others in a data set.
Outlier
(An average) A measure of center in a set of numerical data computed by adding the values in a list and then dividing by the total number of values in the list.
Mean
(Middle)
The middle number in a set of numbers that are listed in order (from least to greatest.) The median is the value appearing at the center (or middle) of an odd number of values or “the mean” of the two central values if the list contains an even number of values.
Median
The number or numbers that occur most frequently in a set of data; when all numbers occur with the same frequency, we say there is no mode.
Mode
Defined as the difference between the highest and lowest values. The range is a measure of spread and it tells us how much a data set is spread out or scattered.
Range
A type of bar graph that uses touching bars and shows the frequency of data within equal intervals.
Histogram
(lowest number)
The smallest numerical value in a data set
Minimum
(highest number)
The largest numerical value in a data set.
Maximum
describes the variability of a data set, that is, how the data is spread out and varies from the mean. (includes the range)
Spread
A graph that uses dots above a number line to show frequency of data.
Dot plot
Data that goes more toward one direction (also called asymmetrical); looks like up a hill or down a hill.
Skewed Data
Data that is roughly the same shape on both sides; mean and median are the same
Symmetrical Data
These locate the middle of a distribution. The mean, median, and mode.
Measures of center
tall spikes in data
Peaks
Ignore, put a 5 (This will be edited out later)
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A value much greater or much less than the others in a data set.
Outlier