All

Question 1

Area of sector

Answer 1

(in radians)

Question 2

Area of segment

Answer 2

(in radians)

Question 3

Geometric Distribution

Answer 3

Question 4

nth term of an arithmetic sequence

Answer 4

Question 5

nth term of a geometric sequence

Answer 5

Question 6

E(X)

Var(X)

E(aX+b)

Var(aX+b)

Answer 6

Question 7

Polar to Cartesian

x = …

y = …

Answer 7

x = rcos(Ø)

y = rsin(Ø)

Question 8

Polar Curve Area

Answer 8

Question 9

Tension in a String

Answer 9

Question 10

Elastic Potential Energy (EPE)

Answer 10

Question 11

Component of a in direction of b

Answer 11

Question 12

Relationship between scale factors

(area, length and volume)

Answer 12

Question 13

P(A/B)

Answer 13

Question 14

when a=0; r (position) = …

where does this formula come from

Answer 14

Comes from: s = ut + 0.5at^2

Question 15

As a fractions

Answer 15

Question 16

Outliers

• in terms of quartiles
• in terms of mean and S.D.

Answer 16

usually given in question

Question 17

Frequency density: what and =…

area of bar = …

Answer 17

Frequency density if on y-axis

frequency density = (k x frequency) / class width

area of bar = k x frequency

(k is a constant)

Question 18

remember … when using bounds in group data

Answer 18

extent the bound so there are no gaps e.g.

10-12

13-17

BECOMES

10-12.5

12.5-17

Question 19

remember … when approximating binomial with normal distribution

Answer 19

P(x>4) = P(X>4.5)

P(X equal to> 4) = P(X>3.5)

P(X=4) = P(3.5<x>
</x>