Terms Flashcards
Modal class
The class with the highest frequency
Mean
All numbers added together/ quantity of numbers
Mode
Number with the highest frequency
Median
Middle number in data
Upper quartile
Above the middle number in top half of data
Lower quartile
Below the middle number in the lower half of data
Surd
A surd is an irrational root of a rational number to give an irrational number
Prime number
Only has factors of one and itself (2 is the only even prime number, 1 is not a prime number)
Triangular number
Dots each representing 1 would make a triangle, 1, 3, 6, 10 etc
Composite number
A number that has more than 2 factors
Integer
A whole number
Coefficient
Number before an algebraic term
Parallel
Lines with the same gradient that will never cross
Perpendicular
Lines that meet at 90 degrees, they have gradients that are the negative reciprocal of each other
Translation
Movement of a shape
Reflection
Mirroring of a shape in a line
Rotation
Rotating a shape about a point
Enlargement
Making a shape bigger or smaller about a point by a scale factor
Transformation
Changing a shape but it still looks similar/ the same
Scale factor
The number you multiply to get from a to b
Highest common factor
Found by multiplying all common factors together
Lowest common multiple
Found by multiplying all factors of both numbers together, common factors are only used once
Cumulative frequency
How frequency adds up as you move along the data/ through the table
Vectors
Have magnitude and direction
Scalar
Have either magnitude or direction but not both
Quantitative data
