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Table 2 Coefficients for the OLS model for the user Study ‐1

From: Designing challenge questions for location‐based authentication systems: a real‐life study

Feature Coefficients Baseline
  Legitimate Strong adversary Naive adversary  
Number of Correct Answers ‐0.047 * ‐0.015 0.004  
Days Ago ‐0.024 * ‐0.21 * ‐0.003  
Time to Answer (seconds) ‐8.877e‐5 0.000 0.000 *  
Number of Options: 15 options ‐0.012 ‐0.099 * ‐0.023 * 9 Options
Order of Questions: [Q2‐Q3‐Q1] 0.045 0.008 ‐0.010 Order [Q1‐Q2‐Q3]
Order of Questions: [Q3‐Q2‐Q1] 0.089 * 0.065 ‐0.014 Order [Q1‐Q2‐Q3]
Question Type: QType‐2 0.109 * ‐0.270 * ‐0.059 * QType‐1
Question Type: QType‐3 ‐0.124 * ‐0.249 * ‐0.057 * QType‐1