RDBMS Stands for ________________________________________

question 68

Short Answer

RDBMS stands for ________________________________________.

Calculate the mean and standard deviation from given data.

Apply the Empirical Rule to mound-shaped distributions to determine the percentage of data within one, two, or three standard deviations from the mean.

Use Tchebysheff's Theorem for any shaped distribution to estimate the proportion of observations within a certain number of standard deviations from the mean.

Determine the shape of a distribution based on the relationship between mean, median, and mode.

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Definitions:

T-test

A statistical test used to compare the means of two groups to determine if they are significantly different from each other.

Population Variances

The squared difference between each data point in the entire population and the mean of the population, indicating overall data spread.

Test Statistic

A calculated value from sample data used to decide whether to reject the null hypothesis in hypothesis testing.

Degrees of Freedom

The quantity of distinct values or numbers that can be allocated to a statistical distribution.