19 terms

alipatnoTEACHER

box plot

a diagram of range, median, and interquartile range;

data set

a collection of numbers that answer a statistical question

distribution

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

histogram

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

mean

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

median

the middle value in a data set that is arranged in ascending order; is a measure of center

mode

the number that appears most often in a data set

outlier

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

quartile

the values that divide a data set into quarters

range

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