math prelim

Question 1

Precision

Answer 1

Smallest unit

Question 2

absolute error

Answer 2

1/2 of precision

Question 3

categorical ordinal

Answer 3

categorised but ranked by value e.g teams on ladder

Question 4

percentage error

Answer 4

Absolute error/total measurement X 100

Question 5

categorical nominal

Answer 5

not in order e.g colours

Question 6

numerical continous

Answer 6

changing variable with range e.g height temperature

Question 6

numerical discrete

Answer 6

set number e.g someones age

Question 7

systematic data

Answer 7

set data collecting such as every 30th person

Question 8

stratified data

Answer 8

random population of group

Question 8

Find gst Inc Gst

Answer 8

divide the total price (x) by 110 then times x by 10

Question 9

equation of a straight line

Answer 9

y=mx+c

Question 10

what is the gradiant

Answer 10

rise/run

Question 11

Mean

Answer 11

average

Question 11

median

Answer 11

middle number

Question 12

IQR

Answer 12

q3-q1

Question 12

range

Answer 12

highest - lowest

Question 12

mode

Answer 12

most recurring

Question 13

1m Cubed to L

Answer 13

1000L

Question 14

1M cubed to KL

Answer 14

1kl

Question 15

km/h convert to m/s

Answer 15

(KM/ 60x60) x1000

Question 16

arc length

Answer 16

theater/360 x 2 Pie x r

Question 17

area of quadrant

Answer 17

theater/360 x pie x R squared