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# Alg1B Unit 2

### Polynomials

Term | Definition |
---|---|

Polynomial | An expression where every variable has a whole number exponent |

Monomial | A polynomial with one term |

Binomial | A polynomial with two terms |

Trinomial | A polynomial with three terms |

Simplify | To combine like terms by way of addition or subtraction or reduce fractional expressions where applicable |

Like Terms | Two or more terms that are either constants or contain the same variable part or same variables and powers |

Constant | Any real number |

Descending Order | When terms are written from greatest to least degree |

Degree of Polynomial | The greatest degree of its terms |

FOIL | First, Outer, Inner, Last - method of multiplying two binomials |

Factoring | The process of rewriting an expression or polynomial as an equivalent product of two or more factors |

Greatest Common Factor (GCF) | The greatest factor all terms share in common |

Quadratic Expression | Polynomials of the form ax^2+bx+c, where a, b, and c are coefficients, and a is non-zero |

Perfect Square Trinomial | A quadratic expression that is the product of a binomial, either (a+b) or (a−b), squared |

Difference of Squares | A quadratic expression of the form a^2−b^2 that can be factored as (a+b)(a−b) |

Range | The difference between the minimum and maximum value of a data set. |

Outlier | A data value that is less than 1.5 times the interquartile range below the first quartile or is greater than 1.5 times the interquartile range above the third quartile. |

Center | The mean or median of a data set. |

Spread | The range, the standard deviation, or the interquartile range of a data set. |

Two-way frequency table | A visual display of the counts of frequencies for two categorical variables. |

Joint frequency | Entries found in the interior cells (non-total column and row) in a two-way frequency table, which are the counts of data where both variables occur. |

Marginal frequency | The total of the cells in a row or column for a category of a two-way frequency table. |

Categorical data | In statistics, categorical data, or qualitative data, can take on one of a limited, and usually fixed, number of possible values, which are assigned to groups based on their properties. |