TABLE 2-9 the Stem-And-Leaf Display Represents the Number of Times in a in a Year

question 221

Short Answer

TABLE 2-9
The Stem-and-Leaf display represents the number of times in a year that a random sample of 100 "lifetime" members of a health club actually visited the facility.

-Referring to Table 2-9, if a frequency distribution with equal sized classes was made from this data, and the first class was "0 but less than 10," the class midpoint of the third class would be ________.

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Definitions:

Natural Selection

The process by which organisms better adapted to their environment tend to survive and produce more offspring, a key mechanism of evolution.

Allele Frequencies

The proportion of different variants of a gene (alleles) within a population, which can change over time due to evolutionary pressures.

Gene Flow

The transfer of genetic variation from one population to another, which can increase genetic diversity in the recipient population.

Genetic Drift

A mechanism of evolution that involves random fluctuations in the frequency of alleles within a population across generations.