Geodemographics
GDG621S
5.4 Standardised values for each variable between O and 1 when O has a negative
impact on the presence of risk and 1 has a positive impact. 1 means a risky
situation while O is non-risky.
(4)
5.5 Generate a combined indicator of disaster risk, concatenating the results of
point 4.
(4)
[20]
Question 6
6.1 What is a sample?
(2)
6.2 Mention and briefly describe two probabilistic and two non-probabilistic
sampling methods.
(4)
6.3 What is the probability of being selected in a random sampling of 5 samples
applied to a population of 24 elements?
(2)
[11]
Question 7
7.1 What is spatial autocorrelation? Please explain it in your own words providing
one example present in nature or relative to humans.
(3)
7.2 Which index is used to quantify spatial autocorrelation? How would you
interpret a resulting value of 0.9?
(2)
7.3. Why is spatial autocorrelation important in geodemographics?
(2)
7.4 Develop and calculate the result of the following summary (SUM) as part of
the calculations required to derive spatial autocorrelation. Use the dataset Yi (4)
Second Opportunity Question Paper
Page4of5
July 2023