Summary Statistics of Filter Bubble Point (BP) Ratiosa
| Data Set | Mean (sd) | 95% CI for Meanb | Median (IQRc) | Min–Max | n |
|---|---|---|---|---|---|
| All Filters | 1.00 (0.15) | 0.99–1.02 | 1.00 (0.97–1.02) | 0.66–2.70 | 518 |
| Test Filters | 1.00 (0.14) | 0.99–1.01 | 1.00 (0.99–1.01) | 0.67–2.76 | 512 |
| Control Filters (0.45 μm) | 1.00 (0.21) | 0.98–1.02 | 1.00 (0.93–1.04) | 0.55–4.16 | 506 |
↵a The first column describes the portion of the data set (see Appendix Table S-I: Complete Data Set) for which the statistics are compiled. The second column gives the mean of all values (in the entire data set or a portion as described in Column 1 with the standard deviation (sd) in parentheses. The third column gives the 95% confidence interval (CI) for the mean of a normal distribution with the same mean and standard deviation shown in Column 2. The fourth column gives the median with the interquartile range (values encompassing the middle 50%) provided in parentheses. The fifth column gives the minimum and maximum (min–max). The last column gives the number of observations (BP ratios) in the portion of the data set descried in Column 1.
↵b Confidence interval for a normal distribution.
↵c Interquartile Range, spanning from the 25th to the 75th percentile of the data.