Examlex
A random sample of size 20 taken from a normally distributed population resulted in a sample variance of 32. The lower limit of a 90% confidence interval for the population variance would be:
Median
The median is the central number in a set of data that has been organized in either increasing or decreasing sequence.
Bimodal Data
A distribution of data showing two distinct peaks or modes, indicating two predominant values within the dataset.
Population Mean
The mean of all members of a whole population, representing the central tendency of the population data.
Sample Mean
The average of a set of observations or scores taken from a sample.
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