# Math Dictionary q

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Q

Q1 : 1st quartile.It is 25% of the data.

Q3 : 3rd quartile. It is 75% of the data.

Quadrangle : Another name for Quadrilateral (a flat shape with four straight sides).

Quadrant : The four regions of a plane created by the intersection of the coordinate axes. Each of these quadrants has a number designation.

Quadratic equation : An equation that can be written in the form ax2 + bx + c = 0 , where a, b, and c are real con

Quadratic formula : Quadratic polynomial : A polynomial with degree 2 is called quadratic polynomial.

Quadruple : 4 times or multiply by 4.

Quadrilateral : A polygon with 4 sides.

Quadrillion : Usually means a thousand million millions. 1,000 x 1,000,000 x 1,000,000 = 1,000,000,000,000,000.
A 1 followed by 15 zeros, 1 × 1015

Qualitative Data : Qualitative data is descriptive information (it describes something)

Quantitative Data : Data that can be counted (called "discrete data") or measured (called "continuous data")

Quantum theory : A theory of Physics based on the assumption that energy exists in indivisible units.

Quarter : One of four equal parts.
Written as 1/4.

Quartiles : The values that divide a list of numbers into quarters.

Quintal : It is a ancient unit to measure mass.It is also known as 'ton'. 1 quintal = 100 kg.

Quintic polynomial : A Polynomial with degree 5 is called quintic polynomial.

Quotient : The answer after you divide one number by another.
dividend ÷ divisor = quotient

Quotient rule: This rule is used in derivative or differentiation.
If there are two different functions u and v then the derivative of (u/v) is given by
(u/v)' = (u'v - v'u)/v2

Quiz: Series of questions for testing knowledge.

Math dictionary q

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