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Table 7 Time spent by the workers over the 27 HITs

From: OC-2-KB: integrating crowdsourcing into an obesity and cancer knowledge base curation system

  Time spent on HITs
Time ≥ 0 s ≥ 300 s ≥ 750 s
min 43 332 761
max 2095 2095 2095
\(\overline {x}\) 1,001.21 1,255.35 1,421.11
σ 638.27 495.58 382.54
Number of assignments completed 5734 4413 3770
  1. *The number assignments completed within the time range. Note that, there were 27 HITs, and each HIT was completed by 5 workers. Thus, there are a total of 135 assignments (27 HITs times 5 workers)