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# Math Vocab Review OA

### 7th/8th grade review

Question | Answer |
---|---|

How far a number is from 0 on a number line | absolute value |

An angle that measures between 0 and 90 degrees | acute |

When a sampling method is not fair | bias |

A graph that represents data using quartiles | box and whisker plot |

The number next to the variable | coefficient |

Two shapes with the same size, same shape, same angle measurements | congruent |

A transformation that changes the size of the original shape | dilation |

Two events that have no outcomes in common | disjoint events |

This property means to multiple the term on the outside of the parenthesis by everything inside the parenthesis | distributive property |

In probability, this is the result of experiments/trials | experimental probability |

In probability, this principle can be used to find the total number of outcomes | Fundamental Counting Principle |

This graph uses bars to show the frequency of data within equal intervals | histogram |

Two events in which the first event does not affect the outcome of the second event | independent event |

Doing the opposite operation | inverse operation |

numbers that cannot be written as a fraction; a set of real numbers that never ends or repeats | irrational |

the average of a set of data | mean |

the most frequent number in a set of data | mode |

the middle number in a set of data | median |

the different between the greatest and least number in a set of data | range |

the difference between the third and first quartile | interquartile range |

an angle that measures greater than 90 and less than 180 degrees | obtuse |

a pair of numbers that gives the coordinate of a point on a grid in this order (horizontal coordinate, vertical coordinate) | ordered pair |

a data point that does not fit in with the rest of the data | outlier |

two lines on the same plane that never intersect | parallel lines |

two lines that intersect to form a right angle | perpendicular line |

a closed figure formed from line segments that meet only at their endpoints | polygon |

the chance of an event occurring | probability |

an equation showing that two ratios are equal (use this to solve similar figures and conversions) | proportion |

a sample in which every event has an equal change of being selected | random |

the whole group in a sample | population |

part of the population | sample |

any number that can be written as a fraction; a real number that repeats or stops | rational number |

mirror image | reflection |

a 90 degree angle | right angle |

to turn a figure | rotate |

a list of all possible outcomes | sample space |

a form for writing numbers as the product of a power of 10 and a decimal number greater than or equal to 1 and less than 10 | scientific notation |

what should happen when testing an experiment | theoretical probability |

a transformation in which an image is formed by moving every point on a figure the same distance in the same direction | translation |

a changing quantity, usually a letter in an algebraic equation or expression | variable |

negative times a positive equals a _____ | negative |

negative divided by a negative equals a ____ | positive |

The theorem used to solve for a missing side length on a right triangle (a squared + b squared = c squared) | Pythagorean Theorem |

part over whole equals percent over 100 | percent chart |

half the diameter | radius |

rise over run; change in y over the change in x | slope |

a number that indicates how many times the base is multiplied by its factor | exponent |

a line that divides a figure into two congruent halves that are reflections of each other | line of symmetry |

when a figure can be rotated less than a full turn and still look that the original figure | rotational symmetry |

the sum of the areas of all the faces of a 3-d figure | surface area |

the amount of space inside a 3-d object | volume |

Created by:
kimkel