The population variance is defined as the sum of the _____ .
a. squared differences of each score from the sample mean of a distribution divided
by the sample size
b. differences of each score from the mean of a population divided by the
population size
c. squared differences of each score from the mean of a population divided by the
population size
d. differences of each score from the mean of a population divided by the
population size minus one
Question 2
For the class interval of 20-25, the lower real limit is _____ .
a. 19.5
b. 20.0
c. 19.0
d. 20.5
Three ways that factors affect mortality in response to changes in population density.
Risk of death from motorcycle accidents (dashed lines) and passenger accidents (solid lines) per 100
Population Distribution
World Population Growth
Sensory Differences Between Species
Time vs. USA Population Exponential