Data Displays Flashcards
network diagram
has lines connecting small circles or other shapes. Each small shape is a node standing for an individual, and each line stands for a relationship between two individuals.
tree diagram
a type of network diagram that shows partly ordered data like organizational structures, ancestral relationships, or conditional probabilities. In a tree diagram, each relationship is one way.
flowchart
each node stands for a step in a process. Arrows direct you from each step to the next. An arrow pointing back to an earlier step tells you to repeat that step. A flowchart usually has at least three types of nodes
flowchart - process node
stand for actions to take and are usually rectangles
flowchart - decision nodes
show questions to answer and are usually diamond shaped
flowchart - terminal nodes
show the start or end of the process and are usually oval.
distribution
a pattern in how often different values appear in data
uniform distribution
each value occurs more or less equally often
normal distribution
one central value occurs most often, with other values occurring less often the farther they are from the central value
skewed distribution
a distribution with a larger tail on one side of the hump than the other. For a skewed distribution, the mean is often farther out on the larger tail than the median is.