19 terms

Data Distribution Vocabulary


Terms in this set (...)

box plot
a diagram of range, median, and interquartile range;
data set
a collection of numbers that answer a statistical question
the overall shape of data related to a statistical question; it can include normal distribution, or the data can be left or right sweked
line plot
a diagram that uses x's and a number line to show the values in a data set
a diagram of data grouped into ranges; each bar represents a range of data
interquartile range
the difference between the first quartile and the third quartile of a data set; it is a measure of range
mean absolute deviation
the average distance from the mean to the numbers in the data set
the average of all of the values in the data set; is a measure of center
measure of center
a measurement that identifies a center of distribution in a data set; mean and median are good measures of center
the middle value in a data set that is arranged in ascending order; is a measure of center
the number that appears most often in a data set
a number that is different from other numbers in the data set; it stands apart from the other data
first quartile
it is the middle number between the lower extreme (smallest number) and the median of a data set
third quartile
the middle number between the median and the upper extreme (largest number) of a data set
the values that divide a data set into quarters
the difference between the lowest value and the highest value in a data set
measure of spread
this describes how far from the center the numbers in a data set are; range, interquartile range, and mean absolute deviation (M.A.D.) are all measures of spread
statistical question
a question that has variability in the answer; examples: What is the age of each dog in the neighborhood?
skewed data distribution
the mean is too far to the right or left of the peak