Public understanding of visual representations of uncertainty in temperature forecasts

Public understanding of visual representations of uncertainty in temperature forecasts

Tak, S.W.
Toet, A.
van Erp, J.B.F.

2015

Multiday weather forecasts often include graphical representations of uncertainty. However, visual representations of probabilistic events are often misinterpreted by the general public. Although various uncertainty visualizations are now in use, the parameters that determine their successful deployment are still unknown. At the same time, a correct understanding of possible weather forecast outcomes will enable the public to make better decisions and will increase their trust in these predictions. We investigated the effects of the visual form and width of temperature forecast visualizations with uncertainty on estimates of the probability that the temperature could exceed a given value. The results suggest that people apply an internal model of the uncertainty distribution that closely resembles a normal distribution, which confirms previous findings. Also, the visualization type appears to affect the applied internal model, in particular the probability estimates of values outside the depicted uncertainty range. Furthermore, we find that perceived uncertainty does not necessarily map linearly to visual features, as identical relative positions to the range are being judged differently depending on the width of the uncertainty range. Finally, the internal model of the uncertainty distribution is related to participants numeracy. We include some implications for makers or designers of uncertainty visualizations. © Human Factors and Ergonomics Society.

Human & Operational Modelling
PCS - Perceptual and Cognitive Systems
ELSS - Earth, Life and Social Sciences
Informatics
laboratory study
methods
topics
topics
uncertainty
user evaluation study
visualization
Balloons
Flow visualization
Forecasting
Normal distribution
Uncertainty analysis
Visualization
Laboratory studies
methods
topics
uncertainty
User evaluations
Weather forecasting

http://resolver.tudelft.nl/uuid:96c9a969-176f-4ab3-9753-30a59f29d2ba

https://doi.org/10.1177/1555343415591275

527987

SAGE Publications Inc.

1555-3434

Journal of Cognitive Engineering and Decision Making, 9 (3), 241-262

article