Daily mean temperature

Average temp readings for 24 hours

DEGREES

Daily total rainfall

in mm

Trace is <0.05

0 when doing mean

Daily total sunshine

Nearest tenth of an hour

It’s the amount bright sunshine

Daily maximum relative humidity

% of air with water vapour

over 95 is fog

Daily mean wind speed

In knots

In Beaufort scale

1 knot in km

1.8

Beaufort scale range

0 - calm

6 - strong breeze

12 - hurricane

Daily maximum gust

Maximum wind speed in a day

In knots

Daily mean wind direction

From north a bearing not padded with 0s

Rounded nearest 10

Cloud cover

In oktas, fraction of sky covered by cloud

0-8

Visibility

DECAMETERS (10cm)

Greatest distance an object can be seen in daylight

Mean pressure

Mean pressure at sea level In hPa (100pa)

Typical pressure range

900-1100hPa

Frequency, cw, density equation

freq = fd* cw

How to prove statically independent

P(A) * P(B) == P(A n B)

Answer to ‘why include this reading/stat’

It is a piece of data and we should consider all the data

Answer to ‘why exclude this reading/stat’

It is an extreme value and could unduly influence the analysis

How to answer give an interpretation of the correlation between X and Y

as X (in/decreases), Y (in/decreases)

How to answer ‘give interpretation of regression line’

a X amount increase in X gives rise to a Y increase in Y

How to answer comment on suitability of sampling method

Anything valid such as ‘could use from more locations/from more months’

How to answer suggest how would better use the large data set

Use more locations and more of the months

How to answer comment on validity of the model to obtain answer

RELATE the sampling type to the question, eg is the sample random?

How to explain restriction in polynomial function (eg for some range of values of X)

Substitute the min and max range

Show some sort of relationship between the answers to the subbed in

Link it, explain ‘eg it must be positive’

How to write equation for motion of an object

OBJECT (NOT COMBINED) mass * a (a is unknown) = +-T (depending if it’s under g or not, T points always to the pulley) +- X. X could be the mass * g (if it’s under gravity) or if it’s on something then it’s the resistive forces (or just 0 if none)

Improvements which can be made to a model

BETTER ACCURACY FOR g

Variable resistance

Include dimensions of the objects (give an object, eg the ball)

What is the critical region

Region to accept alt hyp

How to find actual significance level

The values for the critical regions added (for two tail) as a percentage

For finding critical region, use equal and greater/less operands or just >. < without the equals

WITH the equals always

Asterisk on box plot

Outlier

AS level distributions TYPES

uniform discrete

continuous etc

AS level distribution MODELS

binomial

how to answer ‘why is this not a suitable model.. etc’ o.e.

X may not be proportional to Y

X may be affected by other things like ….

Binomial requirements

independent

Fixed size sample

Two outcomes

Sampling frame

Set of people/things which can be included in the sample

What is a statistic

Random variable that is a function of the sample with contains NO unknown params

Census vs sample

Census includes everyone in a population

Sample is a sample

What dates large data set

May to Oct 87,2015