Unit 3

Question 1

Accuracy

Answer 1

Degree of closeness of measurements to the actual or accepted value

Question 2

Tonal shading

Answer 2

Representation of light and shade on a sketch or map

Question 3

Caliper

Answer 3

Measuring instrument having two adjustable jaws typically used to measure distance or thickness

Question 4

Prototype

Answer 4

Full-scale working model used to test a design concept by making actual observations and necessary adjustments

Question 5

Histogram

Answer 5

Graph of vertical bars representing the frequency distribution of a set of data

Question 6

Median

Answer 6

Measure of center in a set of numerical data

Question 7

Statistics

Answer 7

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

Question 8

Parabola

Answer 8

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

Question 9

Mode

Answer 9

The value that occurs most frequently in a given data set

Question 10

Standard deviation

Answer 10

The distance of a value in a population from the mean value of the population

Question 11

Significant figures

Answer 11

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

Question 12

Central tendency

Answer 12

Center of a distribution