This document provides an overview of different types of variables and methods for summarizing clinical data, including descriptive statistics. It discusses categorical variables like gender and ordinal variables like disease staging. For continuous variables it explains measures of central tendency like mean, median and mode, and measures of variation like range, standard deviation, and interquartile range. Graphs for summarizing univariate data are also covered, such as bar charts for categorical variables and histograms and box plots for continuous variables.
1) Organisms in an ecosystem are bound together in a web of interactions and coevolve over time to support each other.
2) Predators and prey coevolve through natural selection, with predators developing traits for hunting and prey developing defenses for escaping predators.
3) Symbiotic relationships can benefit both organisms, like aphids and ants, or benefit one organism without harming the other, like clown fish living among sea anemones.
Brett James Meredith passed away on January 2nd, 2010. This document serves as a tribute to Brett, remembering his life and impact on others. While brief, it honors Brett and his memory through respectful remembrance.
Populations tend to grow exponentially at first until resources become limited, after which growth slows and the population reaches its carrying capacity. Demographers use population models like the logistic growth curve to predict how populations will change over time based on birth and death rates and factors like available resources. While some populations like bacteria and insects grow rapidly in changing environments, most species like humans and other mammals follow a logistic growth pattern of slower growth to a stable carrying capacity.
This document provides an overview of different types of variables and methods for summarizing clinical data, including descriptive statistics. It discusses categorical variables like gender and ordinal variables like disease staging. For continuous variables it explains measures of central tendency like mean, median and mode, and measures of variation like range, standard deviation, and interquartile range. Graphs for summarizing univariate data are also covered, such as bar charts for categorical variables and histograms and box plots for continuous variables.
1) Organisms in an ecosystem are bound together in a web of interactions and coevolve over time to support each other.
2) Predators and prey coevolve through natural selection, with predators developing traits for hunting and prey developing defenses for escaping predators.
3) Symbiotic relationships can benefit both organisms, like aphids and ants, or benefit one organism without harming the other, like clown fish living among sea anemones.
Brett James Meredith passed away on January 2nd, 2010. This document serves as a tribute to Brett, remembering his life and impact on others. While brief, it honors Brett and his memory through respectful remembrance.
Populations tend to grow exponentially at first until resources become limited, after which growth slows and the population reaches its carrying capacity. Demographers use population models like the logistic growth curve to predict how populations will change over time based on birth and death rates and factors like available resources. While some populations like bacteria and insects grow rapidly in changing environments, most species like humans and other mammals follow a logistic growth pattern of slower growth to a stable carrying capacity.