_________ is one of the basic methods of inferential statistics that helps a researcher determine the difference between a real and a random pattern in a data set.

Cluster sampling and Stratified sampling form part of Probability Sampling Methods.

Probability proves useful:

Cross tabulation of data is possible through the following:

The correlation co-efficient quantifies the strength of the relationship between two variables and the value of this co-efficient falls between:

Examples of Measures of central tendency include:

Symbolism: What does the small sigma represent (without any other symbols) in statistics?

How is P(A|B) interpreted?

What is true about these 5 numbers? -10, -5, 0, 1, 2

Suppose E is an event in a sample space S with probability .3. What is the probability of the complement of E?

Where would the outliers be if a distribution had a skewness of +1?