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Maths > Large Data Set > Flashcards

Large Data Set Flashcards

1
Q

What are the five UK weather stations in order of South to North?

A

Camborne
Hurn
Heathrow
Leeming
Leuchars

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2
Q

What are the three overseas weather stations?

A

Bejing
Jacksonville
Perth

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3
Q

What is unique about Perth?

A

It’s in the southern hemisphere so winter is June to August

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4
Q

What two time periods are measured in the large data set?

A

May to October 1987
May to October 2015

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5
Q

What is Daily Mean Temperature measured in?

A

Degrees Celsius

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6
Q

What is Daily Total Rainfall measured in?

A

Millimetres

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7
Q

What is the upper band for a trace amount of rainfall ?

A

0.05 mm

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8
Q

What is Daily Total Sunshine measured in?

A

Hours to one decimal place

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9
Q

What does Daily Maximum Relative Humidity measure?

A

The saturation of water vapour in the atmosphere

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10
Q

What are values above 90% in Daily Maximum Relative Humidity associated with?

A

Fog and Mist

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11
Q

What are values of 100% in Daily Maximum Relative Humidity associated with?

A

Air is fully saturated and condensation can occur

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12
Q

What is Daily Mean Windspeed measured in?

A

Knots

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13
Q

What is the conversion from Knots to Miles per hour?

A

1 Knot = 1.5 Mile per Hour

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14
Q

What is the Beaufort Scale?

A

The conversion of windspeed to qualitative data including fresh, light and moderate

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15
Q

What is Daily Maximum Gust measured in?

A

Maximum speed over a 24hr period and is measured in knots

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16
Q

What is Daily Mean Wind Direction measured in?

A

Degrees relative to True North and the Cardinal Direction (values are rounded to the nearest ten degrees)

17
Q

When measuring the direction of wind how do you choose direction?

A

The direction it is blowing from

18
Q

How is the Daily Maximum Gust Direction measured?

A

The direction the wind was blowing in the hour the maximum gust occurred

19
Q

What is the Daily Maximum Gust Direction measured in?

A

Degrees relative to true north and Cardinal Direction

20
Q

How is Cloud Cover measured ?

A

The fraction of the celestial dome is covered by clouds in eighths

21
Q

What is Cloud Cover measured in?

A

Oktas with 0 oktas representing a clear sky and 8 representing complete overcast

22
Q

How is Visibility measured ?

A

Horizontally

23
Q

What is Visibility measured in?

A

Decametres

24
Q

What is different about how unavailable data is recorded for Visibility?

A

It is recorded by a dash whereas the others are recorded with n/a

25
Q

What is Pressure measured in?

A

Hectopascals

26
Q

What is the 2015 temperature and windspeed range for Camborne?

A

Temperature: 10 - 20

Windspeed: 3 - 18

27
Q

What is the 2015 temperature and windspeed range for Heathrow?

A

Temperature: 8 - 29

Windspeed: 3 - 19

28
Q

What is the 2015 temperature and windspeed range for Hurn?

A

Temperature: 6 - 24

Windspeed: 2 - 19

29
Q

What is the 2015 temperature and windspeed range for Leeming?

A

Temperature: 4 - 23

Windspeed: 3 - 17

30
Q

What is the 2015 temperature and windspeed range for Leuchars?

A

Temperature: 4 - 19

Windspeed: 3 - 23

31
Q

Why does Heathrow have the highest temperature of UK stations ?

A

Heathrow has the biggest UK airport

32
Q

Why does Leuchars have the highest windspeed values ?

A

There is the effect of the sea breeze

33
Q

What is expected of Jacksonville compared to the UK?

A

High temperatures and more rainfall and moderate wind speeds

34
Q

What is expected of Bejing compared to the UK?

A

High and varied temperatures (not as high as Jacksonville)

35
Q

What is expected of Perth compared to the UK?

A

Seasons are reversed and high wind speeds

36
Q

Why is it hard to use random sampling on the large data set?

A

Some values are missing

Maths (2 decks)

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