math prelim Flashcards
1
Q
Precision
A
Smallest unit
2
Q
absolute error
A
1/2 of precision
3
Q
categorical ordinal
A
categorised but ranked by value e.g teams on ladder
4
Q
percentage error
A
Absolute error/total measurement X 100
5
Q
categorical nominal
A
not in order e.g colours
6
Q
numerical continous
A
changing variable with range e.g height temperature
6
Q
numerical discrete
A
set number e.g someones age
7
Q
systematic data
A
set data collecting such as every 30th person
8
Q
stratified data
A
random population of group
8
Q
Find gst Inc Gst
A
divide the total price (x) by 110 then times x by 10
9
Q
equation of a straight line
A
y=mx+c
10
Q
what is the gradiant
A
rise/run
11
Q
Mean
A
average
11
Q
median
A
middle number
12
Q
IQR
A
q3-q1
