30 terms

line plot

a way to organize data along a line where the x's above a number represent how often each value occurs

data

a collection of facts from which conclusions may be drawn

measures of center

mean, median, and mode

bar graph

a graphical representation of a table of data in which the height or length of each bar indicates its frequency

numerical data

data that are numbers

categorical data

data that are words

stacked bar graph

when two or more bar graphs are related to the same situation you stack them on top of each other

bi-modal

a data set that has two modes

graph

a visual display of information or data such as line graphs, bar graphs, and circle graphs

distribution

(statistics) an arrangement of values of a variable showing their frequency of occurrence

percent

a number that represents how many out of a hundred

outlier

a value far away from most of the rest in a set of data

x-axis

the horizontal axis of a graph

y-axis

the vertical axis of a graph

average

(mean) theh total of all values, divided by, the number of values

survey

a way of collecting data by asking people questions

mode

The data item that appears the most number of times

median

The middle number or the average of the two middle numbers in an ordered set of data (remember to list the data in order)

mean

average number of a given set of results

table

a set of data arranged in rows and columns

compare

to examine two or more things to show likeliness

coordinate graph

a grid of vertical and horizontal lines that show the relationship between two variables

prediction

a good guess based on the facts you know

coordinate

An ordered pair of numbers that locate a point on a grid.

scale

the size of the units on an axis of a graph or number line

decimal

a number that uses place value and a decimal point to show values less than one, such as tenths, hundreths,etc.

range

from the lowest score to the highest score in a graph

double bar graph

a bar graph that displays two different shaded bars to compare the two sets of data

stem-and-leaf plot

a quick way to picture the shape of a distribution of the data, while including the actual numerical values in the graph

back-to-back-stem plot

same as stem-and-leaf plot, but uses two sets of data