"Mean deviation from what?"
Sandeep Garg’s Statistics for Class 11 is a concise, exam-focused textbook widely used by Indian senior-secondary students following CBSE and similar syllabuses. It breaks down introductory statistical concepts with clear explanations, worked examples, and practice problems aligned to the typical Class 11 curriculum. Sandeep Garg Statistics Class 11
This is the "bread and butter." Master the Mean, Median, and Mode—specifically the missing frequency problems, as teachers love to test those. Measures of Dispersion: "Mean deviation from what