Variance
Range
The range is the simplest measure of variation to find. It is simply the highest value minus the lowest value.
RANGE = MAXIMUM - MINIMUM
Since the range only uses the largest and smallest values, it is greatly affe…Read More
Central Tendency Mean, Median, Mode, Midrange
Average could mean one of four things. The arithmetic mean, the median, midrange, or mode. For this reason, it is better to specify which average you're talking about.
Mean
This is what people usually intend when they say …Read More
Sample Space
Sample Spaces
A sample space is the set of all possible outcomes. However, some sample spaces are better than
others.
Consider the experiment of flipping two coins. It is possible to get 0 heads, 1 head, or 2 heads.
…Read More
Percentiles, Deciles, Quartiles
Percentiles (100 regions)
The kth percentile is the number which has k% of the values below it. The data must be ranked.
Rank the data
Find k% (k /100) of the sample size, n.
If this is an integer, add 0.5. If it isn't…Read More
Probability related term
Probability Experiment
Process which leads to well-defined results call outcomes
Outcome
The result of a single trial of a probability experiment
Sample Space
Set of all possible outcomes of a probability experiment
Event
…Read More
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