Module 5, Course 1 Carnegie Math MSMB Glossary

Module 5, Course 1

absolute deviation

The absolute value of a deviation.

balance point

The value where all points on a number line are balanced.

bar graph

A graph that displays categorical data using horizontal or vertical bars.

box-and-whisker plot

A graph that displays the five-number summary of a data set.

categorical data

Data that fits into exactly one of several categories.

circle graph

A graph that displays categorical data using sectors of a circle.

clusters

Areas on a graph where data group closely together.

data

Categories, numbers, or observations gathered in response to a statistical question.

deviation

Indicates how far a data value is from the mean.

distribution

The overall shape of a graph showing how data is spread out.

dot plot

A data display that shows discrete data on a number line.

experiment

A method of collecting data through imposed conditions and observation of results.

frequency

The number of times an item or number occurs in a data set.

gaps

Areas of a graph where there are no data.

grouped frequency table

A table used to organize data by how many times data values with a given range occur.

histogram

A graphical way to display quantitative data using vertical bars.

interquartile range (IQR)

The difference between the first and third quartiles.

mean

The arithmetic average of the numbers in a data set.

mean absolute deviation

The average of the absolute deviations.

measure of center

Tells how data values cluster or the location of the center of the data.

measure of variation

Describes the spread of data values.

median

The middle number in a data set when arranged in order.

mode

The value that occurs most frequently in a data set.

observational study

Collecting data by observing the variable of interest.

outliers

Data values that lie a large distance from other data in a graph.

peaks

Values on a graph that contain more data points than those on either side.

population

An entire set of items from which data is collected.

quantitative data

Quantitative data, or numeric data, are data you can place on a numeric scale and compare.

quartiles

Values that describe variation in a data set by splitting data into quarters.

range

The difference between the maximum and minimum values of a data set.

sample

A selection from a population.

skewed left distribution

A distribution where the peak is on the right side and few data points are to the left.

skewed right distribution

A distribution where the peak is on the left side and few data points are to the right.

statistical process

Includes formulating questions, collecting data, analyzing data, and interpreting results.

statistical question

A question that anticipates answers based on variable data.

stem-and-leaf plot

A graphical method to represent ordered numeric data.

survey

A method of collecting data by asking people questions.

symmetric distribution

A distribution where the left and right halves of a graph are mirror images.

uniform distribution

A distribution where data is spread equally across the range.

variability

The property that the value of the attribute being studied can change.