A Level Maths Applied Definitions

Question 1

A Population

Answer 1

the whole set if items that are of interest

Question 2

A Sample

Answer 2

some subset of the population intended to represent the population

Question 3

A Sampling Unit

Answer 3

Each individual things in the population that can be sampled

Question 4

Sampling Frame

Answer 4

Sampling units of a population are individually named or numbered to form a list

Question 5

Census

Answer 5

Data collected from the entire population

Question 6

Outlier

Answer 6

An extreme value

Question 7

Bivariate Data

Answer 7

Data which has pairs of values for two variables

Question 8

Correlation describes

Answer 8

the nature of the linear relationship between two variables

Question 9

Two variables have a casual relationship if

Answer 9

A change in one variable causes a change in the other

Question 10

Interpolation

Answer 10

Making a prediction based on a value inside the range of given data

Question 11

Extrapolation

Answer 11

Making a prediction based on a value outside the range of given data

Question 12

The product moment correlation coefficient describes

Answer 12

the linear correlation between two variables

Question 13

Light

Answer 13

Has negligible mass

Question 14

Thin

Answer 14

Has negligible thickness

Question 15

Lamina

Answer 15

A thin 2D surface with mass distributed evenly across its flat surface

Question 16

Rigid

Answer 16

Doesn’t bend

Question 17

Rod

Answer 17

A long, thin, straight object
Mass is along a line that is rigid

Question 18

Inextensible String

Answer 18

• a string that does not stretch
• so that connected objects can move with the same acceleration
• if the string is taut