Personal Savings: Top 5 Correlated Questions by Pearson Correlation Coefficient with the Response Variable.

<p>Personal Savings: Top 5 Correlated Questions by Pearson Correlation Coefficient with the Response Variable.</p

EnergyMinder: Top 5 Correlated Questions by Pearson Correlation Coefficient with the Response Variable.

<p>EnergyMinder: Top 5 Correlated Questions by Pearson Correlation Coefficient with the Response Variable.</p

Participation versus Contribution: number of responses submitted per user plotted against response contribution per user.

<p>Plots (a) and (b) use the Childhood BMI data, plots (c) and (d) use the EnergyMinder data, and plots (e) and (f) use the Personal Savings data. In plots (a), (c), and (e), real survey data is used. In plots (b), (d), and (f), synthetic data is used.</p

Personal Savings: Top 5 Questions by Rank in a Stepwise Linear Model.

<p>Personal Savings: Top 5 Questions by Rank in a Stepwise Linear Model.</p

Descriptive statistics of the three crowdsourced surveys.

<p>Descriptive statistics of the three crowdsourced surveys.</p

Personal Savings: Predicting Question Quality using Genetic Programming.

<p>Personal Savings: Predicting Question Quality using Genetic Programming.</p

EnergyMinder: Predicting Question Quality using Genetic Programming.

<p>EnergyMinder: Predicting Question Quality using Genetic Programming.</p

Predicting Question Quality.

<p>Predicting Question Quality.</p

Number of Responses Submitted.

<p>Plots (a) and (b) use the Childhood BMI data, plots (c) and (d) use the EnergyMinder data, and plots (e) and (f) use the Personal Savings data. Plots (a), (c), and (e), display (complementary) cumulative probability distributions for the number of responses submitted per user, along with power-law fit lines. Plots (b), (d), and (f), display the number of responses submitted for each participant sorted by User ID (which were assigned based on time of first arrival).</p

Childhood BMI: Top 5 Questions by Rank in a Stepwise Linear Model.

<p>Childhood BMI: Top 5 Questions by Rank in a Stepwise Linear Model.</p