Class 11 Maths · Chapter 13 · CBSE / NCERT
Statistics
Measuring how spread out data is. You’ll learn mean deviation, variance and standard deviation for ungrouped and grouped data.
14 short lessons · about 65 minutes in all
What you’ll learn
- 1Why the average is not enough4 min
- 2Range: biggest minus smallest3 min
- 3Why we drop the minus signs4 min
- 4Mean deviation of a list of numbers5 min
- 5Mean deviation from a frequency table5 min
- 6Median from class intervals5 min
- 7Mean deviation from class intervals5 min
- 8Variance: square the distances5 min
- 9Standard deviation: back to the original unit4 min
- 10Standard deviation from a frequency table5 min
- 11The shortcut: mean of squares minus square of the mean5 min
- 12Step-deviation: make the numbers small5 min
- 13What adding or multiplying does5 min
- 14Fixing wrong data and finding missing values5 min
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Why the average is not enough · about 4 minutes
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More Class 11 Maths
The other 13 chapters.
CH 1Sets14 lessonsCH 2Relations and Functions14 lessonsCH 3Trigonometric Functions14 lessonsCH 4Complex Numbers and Quadratic Equations13 lessonsCH 5Linear Inequalities13 lessonsCH 6Permutations and Combinations14 lessonsCH 7Binomial Theorem13 lessonsCH 8Sequences and Series14 lessonsCH 9Straight Lines14 lessonsCH 10Conic Sections14 lessonsCH 11Introduction to Three Dimensional Geometry13 lessonsCH 12Limits and Derivatives14 lessonsCH 14Probability13 lessons
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