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MEAN
A central tendency and/or AVERAGE. The closest number to the population, for example.
MEDIAN
The MIDDLE NUMBER in a data set when orderd from smallest to biggest. It can be the average of the two middle numbers.
RANGE
The DIFFERENCE BETWEEN the largest and smallest number on a data set. FORMULA: Largest- smallest
MODE
The most COMMON of most FREQUENT number on a data set.
MODAL CLASS
When data is arranged into GROUPS, the group with the most data is denominated as the "modal class". It is analogous to mode
MODELING
A statistical model embodies a set of assumptions concerning the GENERATION of sample data. It is usually specified as a mathematical relationship between ONE OR MORE random variables and other non-random variables.
Its different from graphing
DISCRETE DATA
Data that can only take on PARTICULAR VALUES. It can be categorized and counted. Only a finite number is possible. EG: 5 INSTEAD OF .452253
Data that can take on a full range of values. EG: A persons´ height.
SAMPLE
A selected sub-group from the population. Generally the group that data has been collected from and is only part of the population.
STANDARD DEVIATION
A measure of HOW FAR each value in the data set is from the mean. It can be collected by having the square root of the variance. (how far from the mean as well)
QUARTILES
BREAKING UP INTO QUARTETS and giving them context through measurements. It is within quartiles that data can be distributed
OUTLIER
Data value that is more than 1.5 times the interquartile range (IQR) from the nearest quartile. It is not SIMILAR OR CLOSE to the majority of gatherd information
RANDOM SAMPLE
The selection of a population or sources of information without bias or specific preferences.
DEGREES OF FREEDOM
The number of INDEPENDENT ELEMENTS COMPRISING A STATISTICAL MEASURE. "maximum number of logically independent values, which are values that have the freedom to vary "
AVERAGE CAUSAL EFFECT
The AVERAGE OF THE CAUSES for all cases in the population. Reasoning behind what happens.