GCSE Mathematics AQA

GCSE Mathematics AQA
What is this formula for?
(Theta÷360) x π x r²
ANSWER Area of a sector


What is the missing piece of data needed?
(Size of whole sample ÷ __________) x Layer
ANSWER Population


What is the equation for Surface are of a sphere?


(Symbols you may need: π ² )
ANSWER 4πr²


The Sine Rule for an angle is
Sin A÷a = Sin B÷b = Sin C÷c


What data do you need for this rule?
ANSWER 2 sides & 1 angle


The Sine Rule for a length is
a÷Sin A = b÷Sin B = c÷Sin C


What data do you need for this rule?
ANSWER 1 side & 2 angles

, The Cosine Rule for length is
a²=b²+c²-2bcCosA


What data do you need for this rule?
ANSWER 2 sides & 1 angle


The Cosine Rule for an angle is
CosA =(b²+c²-a²)÷(2bc)


What data do you need for this rule?
ANSWER 3 sides


What is the equation to find the location of the Lower Quartile (LQ) in a sequence?
(Symbols you may need: ÷)
ANSWER (n+1)÷4


What is the equation to find the location of the Upper Quartile (UQ) in a sequence?
(Symbols you may need: ÷)
ANSWER 3((n+1)÷4)


What is the equation to find the location of the Median in a sequence?
(Symbols you may need: ÷)
ANSWER (n+1)÷2


How would you find the interquartile range?
ANSWER Take the Lower Quartile away from the Upper Quartile.