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How to Find the Median Value

WebA quick way to find the middle: Count how many numbers, add 1, then divide by 2. Example: There are 45 numbers. 45 plus 1 is 46, then divide by 2 and we get 23. So the median is …

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Order of Operations

WebStart with: 7 + (6 × 52 + 3) Parentheses first and then Exponents: 7 + (6 × 25 + 3) Then Multiply: 7 + ( 150 + 3) Then Add: 7 + ( 153) Parentheses completed: 7 + 153. Last …

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Stem and Leaf Plots

WebExample: "32" is split into "3" (stem) and "2" (leaf). More Examples: Stem "1" Leaf "5" means 15. Stem "1" Leaf "6" means 16. Stem "2" Leaf "1" means 21. etc. The "stem" values are …

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Calculating the mean from a frequency table

WebAnd instead of counting how many numbers, we can add up the frequencies: Mean = 2×1 + 5×2 + 4×3 + 2×4 + 1×52 + 5 + 4 + 2 + 1. So now we calculate: Mean = 2 + 10 + 12 + 8 + …

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Solving Polynomials

WebWe may be able to solve using basic algebra: Example: 2x+1. 2x+1 is a linear polynomial: The graph of y = 2x+1 is a straight line. It is linear so there is one root. Use Algebra to …

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Determinant of a Matrix

WebDeterminant of a Matrix. The determinant is a special number that can be calculated from a matrix. The matrix has to be square (same number of rows and columns) like this one: 3 …

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Ratio Definition (Illustrated Mathematics Dictionary)

WebA ratio shows the relative sizes of two or more values. Ratios can be shown in different ways: • using the ":" to separate example values. • using the "/" to separate one value …

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Play 4 In A Line!

WebThis game is centuries old, Captain James Cook used to play it with his fellow officers on his long voyages, and so it has also been called "Captain's Mistress". Milton Bradley (now …

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Inequality Definition (Illustrated Mathematics Dictionary)

WebAn inequality compares two values, showing if one is less than, greater than, or simply not equal to another value. a ≠ b says that a is not equal to b. a < b says that a is less than …

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Chi-Square Table

WebThe table below can help you find a "p-value" (the top row) when you know the Degrees of Freedom "DF" (the left column) and the "Chi-Square" value (the values in the table).

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Play Mahjong Solitaire

WebPlay Mahjong Solitaire. Match the tiles to eliminate them. Can only match tiles that are free on the left or right. Very challenging but satisfying.

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