Data Analysis & Statistics
تحليل البيانات والإحصاء
Mean, median, mode, range, charts, tables, basic probability.
11 sub-skills11 lessons available210 practice questions
Lessons
- ~5 min→Mean, Median, Mode & RangeThe four summary statistics, what each one really measures, and the reverse problems the GAT-E loves.
- ~6 min→Reading Tables, Bar, Line & Pie ChartsExtract the right number from a data display and combine values without falling for the common traps.
- ~5 min→Probability BasicsProbability as favourable-over-total, the complement shortcut, and how to combine simple events.
- ~5 min→The Counting PrincipleCount arrangements and choices by multiplying options stage by stage — the foundation of counting questions.
- ~5 min→Weighted AverageAverage groups of different sizes correctly — the simple average is a trap when the groups are unequal.
- ~5 min→Frequency Tables & Grouped DataRead counts from a frequency table and compute the mean by weighting each value by how often it occurs.
- ~5 min→Permutations vs CombinationsDecide whether order matters, then count selections correctly — the distinction that trips up most counting questions.
- ~5 min→Venn Diagrams & Set CountingCount overlapping groups without double-counting, using the two-set formula and the "fill the middle first" rule.
- ~5 min→Compound & Conditional ProbabilityMultiply along a sequence of events and adjust the pool when draws are made without replacement.
- ~5 min→Spread, Range & OutliersMeasure how spread out data are, and predict how an outlier shifts the mean, median, and range.
- ~5 min→Data Trends & Rates of ChangeRead growth, decline, and the steepest change from a line graph, and compute percent change over time.