Paper 1

Question 1

Cost Per Mille (CPM)

Answer 1

(Total Cost / Number of Impressions) x1000

Question 2

Click Through Rate

Answer 2

(Number of Clicks / Number of Impressions) x 100

Question 3

Conversion Rate

Answer 3

(Number of conversions / number of clicks) x 100

Question 4

‘impression’

Answer 4

a single instance of an ad appearing on a screen

Question 5

‘view’

Answer 5

each time someone actually looks at the ad

Question 6

1 billion = standard form

Answer 6

= 1x10 ^9

Question 7

Obsidian Rind - Age:

Answer 7

Age = rind thickness / rate of formation

Question 8

what does the age of Obsidian Rind depend on?

Answer 8

temperature, humidity, hydration, water vapour, water pressure, chemicals…

Question 9

1 micron = …mm

Answer 9

= 0.001mm

Question 10

1 micron = …m

Answer 10

= 0.000001m (1x10^6)

Question 11

Just Noticeable Difference

Answer 11

= the smallest change in a stimulus that people can sense.

Question 12

Weber fraction:

Answer 12

Weber fraction = JND / initial value of stimulus

Question 13

what does the weber fraction show?

Answer 13

the max fractional change in the stimulus, x, that is not noticeable. (amount they can add/subtract without users noticing)

Question 14

% change

Answer 14

((change in values) / original value) x 100

Question 15

1kg = …g

Answer 15

= 1000g

Question 16

1g = …kg

Answer 16

= 0.001kg

Question 17

1kg = …pounds

Answer 17

= 2.2lbs

Question 18

1 tonne = …kg

Answer 18

= 1000kg

Question 19

1 tonne = …pounds

Answer 19

= 2204.62lbs

Question 20

1 cm = …mm

Answer 20

= 10mm

Question 21

1m = …cm

Answer 21

= 100cm

Question 22

1km = ….m

Answer 22

= 1000m

Question 23

1 litre = …ml

Answer 23

= 1000ml

Question 24

1 litre = …cm^3

Answer 24

= 1000cm^3

Question 25

1ml = ...cm^3

Answer 25

= 1cm^3

Question 26

1 yard = ...feet

Answer 26

= 3 feet

Question 27

1 foot = ...inches

Answer 27

= 12 inches

Question 28

1 gallon = ...pints

Answer 28

= 8 pints

Question 29

1 stone = ...pounds

Answer 29

= 14 pounds

Question 30

1 pound = ... ounces

Answer 30

= 16 ounces

Question 31

1kg = ...pounds

Answer 31

= 2.2 pounds

Question 32

1 foot = ...cm

Answer 32

= 30cm

Question 33

1 gallon = ...litres

Answer 33

= 4.5 litres

Question 34

1 mile = ...km

Answer 34

= 1.6km

Question 35

Surface Area of cylinder

Answer 35

(πd x h) + (πr^2)^2

Question 36

Volume of Cylinder

Answer 36

πr^2 x h

Question 37

% of people with certain blood types: A = B = AB = O =

Answer 37

A = 38% B = 10% AB = 3% (universal receiver) O = 48% (universal donor)

Question 38

1000 microns = ...mm

Answer 38

= 1mm

Question 39

z-score

Answer 39

(score - mean) / standard deviation - shows how many standard deviations away from the mean

Question 40

standard deviation

Answer 40

(values in data set - mean)^2 / (number of terms - 1)

Question 41

properties of normal distribution

Answer 41

- a single peak - mean, median and mode - symmetrical around the mean (bell shaped curve) - 50% of distribution is above the mean - most values occur closest to the mean as you move further away from the mean, there are fewer values

Question 42

how much data is there within 1,2 or 3 standard deviations of the mean in a normal distribution

Answer 42

68% within the 1 SD of the mean 95% within the 2 SD of the mean 99.7% within the 3SD of the mean

Question 43

how do you find the standard deviation when you are given the mean and the max or min value

Answer 43

divide by 3

Question 44

alternative formulas

Answer 44

mean = n/2 SD = √n/2