Nine columns can be summarised numerically. Seven of them are stored as text (VARCHAR) and were parsed to numbers, and every column has some missing or unparseable values, so each summary rests on fewer than 300 rows. The figures come from the percentile and summary queries in steps 0 to 9. **Where the distributions look reasonable** - **Productivity_Score** (284 valid): ranges 1.6 to 10, mean 5.23, median 5.0, SD 1.82. The middle half runs from 3.9 to 6.5, so it is fairly symmetric. - **Satisfaction_Score** (293 valid): ranges 3 to 10, mean 6.15, median 6.0, SD 1.52. The middle half runs from 5 to 7, and the 95th percentile is 9. - **Accuracy_Rating** (285 valid): a 2 to 5 scale, mean 3.43, median 4.0, SD 0.86. The mean sits below the median, so ratings lean toward the high end, and the middle half runs from 3 to 4. - **Work_or_Study_Hours_Per_Day** (279 valid): ranges 2.1 to 20, mean 7.29, median 7.2, SD 2.14. The middle half runs from 6.1 to 8.4. The 20-hour maximum is implausible and probably a data-entry error. **Right-skewed, with a long upper tail** - **AI_Usage_Hours_Per_Day** (271 valid): ranges 0.5 to 23, mean 3.01, median 2.2, SD 2.45. The middle half runs from 1.4 to 4.1 and the 95th percentile is 7.55. The 23-hour maximum is an outlier that pulls the mean above the median. - **Time_Saved_Hours_Per_Week** (272 valid): ranges 0 to 19.4, mean 5.81, median 5.05, SD 4.11. The middle half runs from 2.7 to 7.75 and the 95th percentile is 13.5. - **Age** (263 valid): ranges 16 to 97, mean 30.18, median 27, SD 12.47. The middle half runs from 22 to 35 and the 95th percentile is about 55. The maximum of 97 is an extreme value. **Highly skewed** - **Monthly_AI_Cost**: ranges 0 to 100, with a median of 0, so most users pay nothing. The mean is about 9.8 and the SD about 13.7. The upper quartile is 20, the 95th percentile is 30, and the maximum is 100. - **Monthly_Income**: ranges 0 to 250,000, with a median of roughly 520 and a mean of roughly 2,300. The SD is about 14,800, several times the mean. The middle half runs from about 112 to 1,618 and the 95th percentile is about 6,399. A single extreme value, 250,000, drives the mean and SD, so the median and percentiles describe this column better than the mean. Income is personal data, so only aggregates are reported here. **One caveat on two columns** Two ways of parsing the text gave different row counts for Monthly_AI_Cost and Monthly_Income. One approach parsed 288 cost values and 290 income values (cost mean 9.84, income mean 2,304.38, median 521.5). The other parsed 273 and 284 (cost mean 9.76, income mean 2,328.96, median 520). The differences are small and the shape is the same either way, but the exact figures for these two columns depend on how currency formatting is handled. The final percentile table uses the stricter count, 273 and 284. **Missing values:** Time_Saved_Hours_Per_Week (28 missing), AI_Usage_Hours_Per_Day (29), Work_or_Study_Hours_Per_Day (21) and Age (37) have the most missing or unparseable entries.