Layali Statistics Math Terms
Terms in this set (20)
A graph used to display categorical data. Every bar represents a different category. The vertical scale for heights is labeled with the count or percent for each category
uniform distribution is a distribution of data in which the alues of the variable occur approximately the same number of times.
In statistics, the total length of the interval coered by the distribution, from the maximum to minimum values. Range = maximum value - minimum value.
The data item in a set that occurs the most often. A data set may have no mode, one mode, or more than one mode.
A graphic display of data arrange in columns above a horizontal number line, using a single dot to represent each data item. A dot plot is similar to a line plot
The shape of a distribution is symmetrical when the two halves are the same.
In statistics, the shape of a distribution that occurs when one side is longer than the other side.
A data display that shows each data value in two parts according to its place value. The stem represents the first digit or digits, and the leave represents the last digit of the number. A legend shows how to read the values.
The arithmetic average of a set of data found by taking the sum of the data and then dividing by the total number of data items.
Data points in a set of data that do not fit the overall pattern of the data set.
The middle number of a set of data in numerical order
mean absolute deviation
The mean (average ) of the sums of the absolute values of the diffrence between each data point and the chosen measure of central tendency (using the mean).
The difference between the lower and upper quartiles of a set of ordered data.
Values that divide a distribution into four groups, each having an equal number of observations.
This summary includes the minimum, first quartile, median, third quartile, and maximum. The information in a five-number summary is used in making and interpreting box-and-whisker plots.
A data display organized into four sections, each representing 25% of the data. Also known as a box-and-whisker plot
A graph used to show the frequencies for the set of data. The horizontal axis is divided into equal intervvals. The vertical axis shows the frequency, or the number of items, in each interval.
A table that displays the possible values of a variable along with the frequency or number of times that value occurs.
Class intervals are groups into which the possible values of a range of data are divided; for example the division of data on a bar chart or histogram.