Examlex
Auroral displays increase conspicuously at times when sunspots are most numerous.
Sample Ranges
The difference between the highest and lowest values in a sample, used in statistical analysis.
X-bar Control Chart
A statistical tool used in quality control processes to monitor the mean (average) of a quality characteristic over time.
R-chart
A type of control chart used to monitor the range of variability within a process over time.
Central Limit Theorem
A statistical theory stating that the distribution of sample means approximates a normal distribution as the sample size becomes larger, regardless of the population's distribution.
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