# Distribution summary for the nine numeric columns The table above gives min, max, mean, median and standard deviation for each column. The query ran over all 300 rows. Seven columns are stored as text and had to be parsed, and some values did not parse (counts below). ## Main findings - **Rating-style scores are tightly clustered.** - Accuracy_Rating runs 2–5 with mean 3.43, median 4 and SD 0.86. - Satisfaction_Score runs 3–10 with mean 6.15, median 6 and SD 1.52. - Productivity_Score runs 1.6–10 with mean 5.23, median 5 and SD 1.82. - Their means and medians are close, so these look roughly symmetric. Accuracy is slightly left-skewed because its median (4) sits above its mean (3.43). - **Hours-based columns are moderately right-skewed.** - AI_Usage_Hours_Per_Day runs 0.5–23 with mean 3.01, median 2.2 and SD 2.45. The 23-hour maximum is implausible for daily AI use and is probably an outlier or data-entry error. - Time_Saved_Hours_Per_Week runs 0–19.4 with mean 5.81, median 5.05 and SD 4.11. - Work_or_Study_Hours_Per_Day runs 2.1–20 with mean 7.29, median 7.2 and SD 2.14. It is nearly symmetric, though the 20-hour maximum is also extreme. - **Cost and income are heavily skewed.** - Monthly_AI_Cost runs 0–100 with mean 9.84, median 0 and SD 13.75. Most users pay nothing, and a minority on paid plans pull the mean up. - Monthly_Income runs 0–250,000 with mean about 2,304, median 521.5 and SD about 14,743. The mean is roughly 4.4 times the median, and the SD is more than 6 times the mean. A few extreme values dominate, so the median is the more representative figure. These are aggregates only, since income is a sensitive column. - **Age has a long upper tail.** It runs 16–97 with mean 30.2, median 27 and SD 12.5. The 97 maximum is likely an outlier in a mostly student and young-professional population. ## Data quality caveats - **Values that failed numeric parsing** (non-numeric text): - Age: 37 of 300 - AI_Usage_Hours_Per_Day: 29 - Time_Saved_Hours_Per_Week: 28 - Work_or_Study_Hours_Per_Day: 21 - Monthly_AI_Cost: 12 - Monthly_Income: 10 These rows are excluded from the statistics above, so each mean and median covers fewer than 300 rows. - **Missing values in the natively numeric columns:** - Productivity_Score: 284 of 300 present - Accuracy_Rating: 285 present - Satisfaction_Score: 293 present - Because of the outliers noted above, medians are the safer summary for hours, cost, income and age.