TABLE 4-8 According to the Record of the Registrar's Office at a at a State

question 84

Short Answer

TABLE 4-8
According to the record of the registrar's office at a state university, 35% of the students are freshman, 25% are sophomore, 16% are junior and the rest are senior. Among the freshmen, sophomores, juniors and seniors, the portion of students who live in the dormitory are, respectively, 80%, 60%, 30% and 20%.
-Referring to Table 4-8, what is the probability that a randomly selected student is a sophomore who does not live in a dormitory?

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Definitions:

Mode

The value that appears most frequently in a data set.

Central Tendency

A statistical measure that identifies a single value as representative of an entire distribution of data, often used are the mean, median, and mode.

Median

A statistical measure representing the middle value in a set of data, where half the numbers are above the median and half are below.

Correlation

A measure indicating the extent to which two or more variables fluctuate together.