Large-data Set

Question 1

What are the UK locations?

Answer 1

. Leuchars
. Leeming
. Heathrow
. Hurn
. Camborne

Question 2

What type of variables are in the LDS?

Answer 2

discrete variables

Question 3

What are the dates, years and months in the LDS?

Answer 3

1 May - 31st October (184 days)

1987 and 2015

Question 4

What are the 14 variables for the UK locations?

Answer 4

. Daily mean temperature
. Daily total rainfall
. Daily total sunshine
. Daily maximum relative humidity
. Daily mean visibility
. Daily mean cloud coverage
. Daily mean pressure
. Daily maximum gust
. Daily mean wind speed
. Daily mean windspeed (Beaufort conversion)
. Daily mean wind direction (bearing)
. Daily mean wind direction (cardinal direction
. Daily max gust direction
. Daily max gust direction

Question 5

What are the 5 overseas variables?

Answer 5

. Daily mean temperature
. Daily total rainfall
. Daily mean pressure
. Daily mean windspeed
. Daily mean windspeed (Beaufort conversion)

Question 6

Which variable has trace values and how is this dealt with in calculations? Where doesn’t trace appear?

Answer 6

Rainfall - 0.05mm

Take as 0.025mm in calculations (cleaning the data)

Trace doesn’t appear in overseas locations

Question 7

How are the units for daily man temperature?

Answer 7

°C

Question 8

What are the units for total rainfall?

Answer 8

mm

Question 9

What are the units for total sunshine?

Answer 9

Hours

Question 10

What max humidity level is associated with mist and fog?

Answer 10

Above 95%

Question 11

What is the unit for mean visibility and how can it be converted?

Answer 11

Decimetres (Dm)

1Dm = 10m

Question 12

What is the unit for cloud coverage and what is the scale?

Answer 12

Oktas measured from 0-8 (1/9 probability of any one measure)

Question 13

What are the units for daily mean pressure?

Answer 13

hPa

Question 14

How is windspeed and gust measured?

Answer 14

Knots

Question 15

How many different outcomes are there for cardinal directions?

Answer 15

16 - (N, NNE, NNW, NNS, S, SSE…)

Question 16

What is the Beaufort conversion for windspeed?

Answer 16

Qualitative representation of windspeed:
. Light
. Fresh
. Moderate
. Strong

Question 17

How is qualitative wind direction and gust direction measured?

Answer 17

Bearing to the nearest 10°

Question 18

What is the most common rainfall value across ALL locations?

Answer 18

0

Question 19

Which variables links most with humidity?

Answer 19

Daily mean visibility

Question 20

What are the overseas locations and are they northern or southern hemisphere?

Answer 20

. Jacksonville, Florida (North)
. Beijing (North)
. Perth (Southern)