large data Flashcards
(23 cards)
What skills can be practiced using a large data set?
Cleaning data, sampling, hypothesis testing, calculating statistical measures, and creating diagrams.
What does the Edexcel large data set primarily contain data about?
Samples of weather data for eight locations over two different time periods.
Name the five UK locations included in the large data set.
Leuchars, Leeming, Heathrow, Hurn, and Camborne.
Name the three international locations included in the large data set.
Beijing, Perth, and Jacksonville.
What are the two time periods covered by the large data set?
May to October 1987 and May to October 2015.
What is daily mean temperature measured in?
Degrees Celsius (°C).
What is daily total rainfall measured in?
Millimetres (mm).
What does ‘tr’ indicate for rainfall?
A trace of rain, which is an amount less than 0.05mm.
What is daily total sunshine measured in?
Hours (hr).
What is daily maximum relative humidity given as?
A percentage.
What is daily mean wind speed measured in?
Knots.
What units are used for daily maximum gust?
Knots (same as windspeed).
What are the units for cloud cover?
Oktas (eighths of the sky covered by cloud).
What are the units for daily mean visibility?
Decametres.
What are the units for daily mean pressure?
Hectopascals (hPa).
How are missing data entries listed?
‘n/a’ or ‘-‘
Which variables are missing for the first half of May 1987 for the UK cities?
Daily total sunshine, mean wind speed and maximum gust.
For which variables do the three international cities contain data?
Daily mean temperature, daily total rainfall, daily mean pressure, and daily mean wind speed.
Which hemisphere is Perth located in?
The Southern Hemisphere.
Give an example of a discrete variable in the large data set.
Cloud cover.
What can you use for rainfall listed as ‘tr’?
0 or 0.025
When did the Great Storm occur in the UK?
15-16 October 1987.
How many days are covered in total by the large data set?
184 days.
