The _____ is a useful tool for assessing whether the means of two groups of variable are statistically different from each other.

There are two ways to present categorical data. One is by way of graphs, the other is by way of .... .

When a person conducts analysis using data he or she has not collected, the source of such data is called:

Which one form(s) part of descriptive analysis?

While Scientific Research steps, a researcher has to construct a hypothesis soon after defining the problem

A sample of a population is:

Suppose E and F are mutually exclusive events in a sample space S with probabilities .4 and .3 respectively. What is the probability of their union?

What is the median of the following 5 numbers? 10, 2, 4, 3, 1

Which one of these variables is a continuous random variable?

Experts rank athletic teams 1 through 10. This is an example of ______ data.

What is derived from the second moment of distribution?