ABSTRACT (1) 50% of observed months have intra-month registered account range from 2311 to 27790 (the interquartile range); (2) 50% of observed months have intra-month registered account above or below 10432 (the median); (3) The intra-month registered account fell 91.6% from its all time high in 2017 at 238400 to 20046; whilst the bitcoin decreased nearly 83.9%. (4) The demotion on Junior Members in September 2018 probably caused intra-month registered accounts fell considerbaly later months. (5) The difference in means of before and after periods (cut-off timepoint is Sept. 2018) is -63.6%.

Time-series plot

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Statistics over years In both medians and means, the year of 2018 has been the highest year with its median and mean of monthly registered accounts are 66895 and 64782, respectively. - The median means that 50% of months in 2018 have total registered accounts above 66895 or below 66895. - The interquartile range for 2018 is 38393 to 88373. It means 50% of months in 2018 have figures in range from 38393 to 88373. I always use median and interquartile range for descriptive statistics because they automatically exclude effects of outliers data points.

Code:

. tabstat regacc year10 year11 year12 year13 year14 year15 year16 year17 year18, ///
> s(n mean sd p50 p25 p75 min max) c(s)

   variable | N mean sd p50 p25 p75 min max
-------------+--------------------------------------------------------------------------------
   regacc | 112 22199.58 34773.29 10432 2310.5 27790 3 238433
   year10 | 13 146 144.3185 148 22 204 5 384
   year11 | 12 3795.583 3560.192 2469.5 1900 4419.5 938 14048
   year12 | 12 2313.667 353.35 2151.5 2048.5 2636 1901 2958
   year13 | 12 11433.42 8798.91 7399 5219 15989 3320 28776
   year14 | 12 15041.42 8092.689 11552.5 8818 20299.5 7974 29839
   year15 | 12 24992.25 19299.52 17514.5 9151 37009.5 7644 68601
   year16 | 12 16553.67 9350.784 12505.5 10668.5 19635.5 9844 42233
   year17 | 12 63804.75 67452.29 38296 17930.5 83022.5 13664 238433
   year18 | 12 67431.75 34995.66 66895 38393 88373 20733 136872
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