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Unit 5 Vocabulary

Across
Data for two variables (usually two types of related data). Example: Ice cream sales versus the temperature on that day.
an observation that lies an abnormal distance from other values
numerical variables: counts, percents, or numbers
a line through a scatter plot of data points that best expresses the relationship between those points.
a graph in which the values of two variables are plotted along two axes, the pattern of the resulting points revealing any correlation present.
A mathematical representation of a process, device, or concept by means of a number of variables.
to interpret a graph or chart, read the title, look at the key, read the labels. Then study the graph to understand what it shows.
Down
have a slope that varies between points
arranged in or extending along a straight or nearly straight line.
also called the gradient of a line and is a number that describes both the direction and the steepness of the line.
also called a categorical variable, are variables that are not numerical. It describes data that fits into categories
a rate that describes how one quantity changes in relation to another quantity. If x is the independent variable and y is the dependent variable, then. rate of change=change in y change in x. (similar to slope)
y-intercept on a graph or starting amount.
The partitioning of a data set into subsets (clusters), so that the data in each subset (ideally) share some common trait - often similarity or proximity for some defined distance measure.