Statistics

Every Statistics attribute, distilled.

Statistics is an important topic in Mathematics for competitive exam aspirants. This guide gives you a clear, exam-focused explanation of Statistics , shows how it is typically asked, and pairs it with solved practice questions so you can learn the approach and test yourself right away. Work through the questions below to build speed and accuracy.

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Every Statistics question below is pulled live from the test bank. Open any question for the full step-by-step solution and shortcut.

Questions

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Q1Find the arithmetic mean of the data: 12, 15, 18, 20, 25, 30.EasySolve →Q2Find the median of: 7, 9, 11, 13, 15, 19, 21.EasySolve →Q3For the dataset with values 1–6 having frequencies 2,3,5,4,3,1 respectively, find the mode.ModerateSolve →Q4Compute weighted mean of marks 80, 70, 60 with weights 4, 3, 3.ModerateSolve →Q5Group A has 4 observations (18, 20, 22, 24) and Group B has 3 observations (30, 32, 34). Find the combined mean.ModerateSolve →Q6Find the population variance of 5, 7, 9, 11.ModerateSolve →Q7Find the population standard deviation of 5, 7, 9, 11.ModerateSolve →Q8Two series have (mean, SD): A (50, 5) and B (70, 9). Which is more consistent?EasySolve →Q9Find the 70th percentile (P₇₀) using nearest-rank method for data: 22, 25, 27, 30, 35, 40, 42, 45.ModerateSolve →Q10For data 10,12,15,18,21,24,27,30,33 find Q₁ (Tukey method).ModerateSolve →

Every Statistics attribute, distilled.

Test yourself on Statistics

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