PLTW IED Unit 3 Key Terms
Terms in this set (31)
The degree of closeness of measurement of a quantity to the actual (or accepted) value.
Arrowheads are used indicate the end of a dimension line or leader.
A measuring instrument having two adjustable jobs typically used to measure diameter or thickness.
A group of values that is used to analyze the distribution of data.
To change money, stocks, or units in which quantity is expressed into others of a different kind.
Facts and statistics used for reference or analysis.
A group of individual values or bits of information that are related in some way or have some common characteristic or attribute.
A measurable extent, such as the three principal dimensions of an object as in width, height, and depth.
A line which represents distance.
See line plot.
The rate at which something occurs over a particular period or in a given sample.
A diagram showing the relation between variable quantities, typically of two variables measured along a pair of lines at right angles.
A graph of vertical bars representing the frequency distribution of a set of data.
International Organization for Standardization (ISO)
A non-governmental global organization whose principal activity is the development of technical standards through consensus.
International System of Units (SI)
An International System of Units of measurement consisting of seven base units.
A method of visually displaying a distribution of data values for each data value is shown as a dot or mark above a number line. Also known as a dot plot.
A measure of center and a set of numerical data, computed by adding the values a list and then dividing by the number of values in the list.
To determine the size, amount, or degree of an object by comparison with a standard unit.
A measure of center and a set of numerical data. The median of a list of values of the value of caring 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.
The value that occurs most frequently in a given data set.
A function that represents the distribution of variables as a symmetrical bell-shaped graph.
A number or algebraic equation that is used to control the size or location of a geometric figure.
The degree to which repeated measurements show the same result.
1. A straight-edged strip of rigid material marked at regular intervals that is used to measure distances. 2. A proportion between two sets of dimensions used to develop accurate, larger or smaller prototypes, or models of design ideas.
A graph in the coordinate plane representing a set of bivariate data.
The digits in a decimal number that carry meaning contributing to the precision or accuracy of the quantity.
The distance of a value in a population (or sample) from the mean value of the population (same).
Collection of methods for planning experiments, obtaining data, organizing, summarizing, presenting, analyzing, interpreting, and drawing conclusions based on data.
A standard quantity in terms of which other quantities may be expressed.
US Customary Measurement System
System of measurement used in the United States.
A change or slight difference in condition, amount, or level.