Applied Probability and Statistics (WGU)

distribution - answer-an arrangement of values that demonstrates their frequency or occurrence pie chart - answer-categorical data, % bar chart - answer-categorical data; displays counts or frequencies for a category dot plot - answer-quantitative data, data is represented by a single point stem plots - answer-quantitative data, shows distribution while representing specific data points box plots - answer-quantitative data, can be used to compare data sets, each part is 25% of data histograms - answer-quantitative data, display frequencies or counts quantitative data - answer-numerical data, it makes sense for it to be added categorical data - answer-data that consists of names, labels, or other nonnumerical values relative frequency - answer-a way to approximate a percentage by dividing the number of times an event occurred by the number of trials frequency distribution - answer-a record of the number of times data occurs within a certain category outliers - answer-an observation point (number) that is distant from the other observations of a data set center - answer-a measure of central tendency that is used to describe an entire set of data with one value that represents the middle or center of the distribution (mean, median, mode) interval - answer-a set of numbers between two specified values check sheet - answer-a table that allows data to be collected by marking how often an event has occurred in a certain interval symmetric distributions - answer-the left half of a data set being roughly identical to the right half bell curve - answer-normal distribution, results from graphing frequency versus distribution for a trait that varies continuously in a population skewed-right - answer-type of data distribution where frequency starts small, increases, then gradually decreases again skewed-left - answer-distribution where data starts small and consistently increases before dropping off again u-shaped - answer-distribution where data in the middle is lower than the data on the left or right uniform - answer-distribution where all data is virtually the same bimodal - answer-data set with only two peaks multimodal - answer-data set with multiple peaks statistics - answer-the collection and classification of data that are in the form of numbers reliable data - answer-data that is consistent and repeatable valid data - answer-data resulting from a test that accurately measures what it was intended to measure five number summary - answer-lists the minimum, first quartile, median, third quartile, and maximum in a data set quartiles - answer-divides data into four equally sized groups interquartile range - a