Ied: Unit 3 Key Terms

Front 1

accuracy

Back 1

The degree of closeness of measurements of a quantity to the actual (or accepted) value

Front 2

arrowheads

Back 2

Arrowheads are used to indicate the end of a dimension line or leader

Front 3

caliper

Back 3

A measuring instrument having two adjustable jaws typically used to measure diameter or thickness

Front 4

class interval

Back 4

A group of values that is used to analyze the distribution of data

Front 5

convert

Back 5

To change money, stocks, or units in which a quantity is expressed into others of a different kind

Front 6

data

Back 6

Facts and statistics used for reference or analysis

Front 7

data set

Back 7

A group of individual values or bits of information that are related in some way or have some common characteristic or attribute

Front 8

dimension

Back 8

A measurable extent, such as the three principal dimensions of an object as in width, height, and depth

Front 9

dimension lines

Back 9

A line which represents distance

Front 10

dot plot

Back 10

See line plot

Front 11

frequency

Back 11

The rate at which something occurs over a particular period or in a given sample

Front 12

graph

Back 12

A diagram showing the relation between variable quantities, typically of two variables measured along a pair of lines at right angles

Front 13

histogram

Back 13

A graph of vertical bars representing the frequency distribution of a set of data

Front 14

International Organization for Standardization (ISO)

Back 14

A non-governmental global organization whose principal activity is the development of technical standards through consensus

Front 15

International System of Units (SI)

Back 15

An international system of units of measurement consisting of seven base units

Front 16

line plot

Back 16

A method of visually displaying a distribution of data values where each data value is shown as a dot or mark above a number line.

Front 17

mean

Back 17

A measure of center in a set of numerical data, computed by adding the values in a list and then dividing by the number of values in the list

Front 18

measure

Back 18

To determine the size, amount, or degree of an object by comparison with a standard unit

Front 19

median

Back 19

A measure of center in a set of numerical data. Is the value appearing at the center of a sorted version of the list - or the mean of the two central values if the list contains an even number of values

Front 20

mode

Back 20

The value that occurs most frequently in a given data set

Front 21

normal distribution

Back 21

A function that represents the distribution of variables as a symmetrical bell-shaped graph

Front 22

numeric constraint

Back 22

A number value or algebraic equation that is used to control the size or location of a geometric figure

Front 23

precision

Back 23

the degree to which repeated measurements show the same result

Front 24

scale

Back 24

A straight-edged strip of rigid material marked at regular intervals and used to measure distances. A proportion between two sets of dimensions used in developing accurate, larger or smaller prototypes, or models of design ideas

Front 25

scatter plot

Back 25

A graph in the coordinate plane representing a set of bi variate data

Front 26

significant digits

Back 26

The digits in a decimal number that carry meaning contributing to the precision or accuracy of the quantity

Front 27

standard deviation

Back 27

The distance of a value in a population (or sample) from the mean value of the population (or sample)

Front 28

statistics

Back 28

Collection of methods for planning experiments, obtaining data, organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusions based on data

Front 29

unit

Back 29

A standard quantity in terms of which other quantities may be expressed

Front 30

US Customary Measurement System

Back 30

System of measurement used in the United States

Front 31

variation

Back 31

A change or slight difference in condition, amount, or level