dolution
dolution.
Open the EFS data-set
a. Explore the bivariate correlation matrix for the following variables
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Order Paper Nowi. Expenditure in petrol (c72211)
ii. Expenditure in railway and tube fares (exluding season; c73112)
iii. Expenditure on taxis (c73212)
iv. Anonymized household income (incanon)
b. Compute the Spearman’s Rho and the Kendall’s Tau b – are they very different from Pearson’s bivariate correlations?
c. Income is probably influencing the relationship between expenditure in petrol and expenditure on taxis – use partial correlations to account for such an effect
d. Now look at the partial correlation between taxis and petrol after accounting for both income and railway/tube fares
e. What do the above corrrelation values mean? Which ones are significant?
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