Year 12

Question 1

What is dividend yield?

Answer 1

Dividend value as % of total share price

Question 2

Is dividend yield calculated on buying or selling price?

Answer 2

Original purchase price

Question 3

What is the price to earnings ratio?

Answer 3

= share price / earnings per share

Eg. $5, for every $5 share = $1 dividend

Question 4

Are rates or ratios used for equal units?

Answer 4

Ratios

Question 5

Relationship between D, S, T

Answer 5

D = ST

Question 6

How do you find the x intercept (b) of a line?

Answer 6

Use y = mx + b

Sub in y and x, find m

Question 7

Remember 1/2ab IS ONE TERM

Yet x + y is TWO TERMS

Answer 7

just a hint

Question 8

Direct Variation formula?

Answer 8

y = kx

Question 9

What is the difference between a direct and linear relationship?

Answer 9

Direct: One variable is constantly multipled by another, start at 0

y = kx

Linear: One variable changes by constant amount when another changes, does not start at 0

y = mx + b

Question 10

Least squares regression line/line of best fit formula?

Answer 10

Use calculator find a and b

Can use formula y = mx + b
Or
Rearranged form y =a + bx

Question 11

What are a and b?

y = a + bx

Answer 11

a = y intercept
b = gradient

Question 12

2 things to remember in credit card questions

Answer 12

1. Interest charged from day of purchase… calculate days and ADD ONE
2. If does not say compound interest use SIMPLE

Question 13

If an annuity has deposits at end of year or month does it collect interest?

Answer 13

NO, only if deposit occurs at start

Question 14

If an annuity has a withdrawal at the end of the month or year does it get interest?

Answer 14

Yes

Question 15

What is the range of pearson’s correlation coefficient?

Answer 15

-1 and 1

Question 16

What is the letter for the correlation coefficient?

Answer 16

r

Question 17

What coefficient figure indicates no correlation and strong correlation?

Answer 17

0 = no correlation
-1 = strong negative 
1  = strong positive

Question 18

What equation is used for the line of best fit?

Answer 18

y = mx + b

Question 19

What is b on the calculator (line)?

Answer 19

gradient

Question 20

What is a on the caclulator?

Answer 20

y intercept

Question 21

What is a walk?

Answer 21

Route, anything can repeat

Question 22

What is a trail?

Answer 22

A walk, no repeated edges

Question 23

What is a eularian trail?

Answer 23

Walk uses every edge once, ends at different vertices.

Has 2 odd vertices

Question 24

What is a eularian circut?

Answer 24

Walk, uses every edge once, start finishes at the same vertex.
All vertices are even.

Question 25

Can a minimum spanning tree include a circut?

Answer 25

No

Question 26

How is float time calculated?

Answer 26

LST of next activity - activity duration - EST of that activity