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Pair of Linear Equations in Two Variables
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- Equations Reducible to a Pair of Linear Equations in Two Variables
- Consistency of Pair of Linear Equations
- Inconsistency of Pair of Linear Equations
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- Simple Situational Problems
- Pair of Linear Equations in Two Variables
- Relation Between Co-efficient
Quadratic Equations
- Quadratic Equations
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- Solutions of Quadratic Equations by Completing the Square
- Nature of Roots of a Quadratic Equation
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- Situational Problems Based on Quadratic Equations Related to Day to Day Activities to Be Incorporated
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Arithmetic Progressions
Coordinate Geometry
Lines (In Two-dimensions)
Constructions
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Geometry
Triangles
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Circles
Trigonometry
Introduction to Trigonometry
- Trigonometry
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- Trigonometric Ratios and Its Reciprocal
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Trigonometric Identities
Some Applications of Trigonometry
Mensuration
Areas Related to Circles
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Surface Areas and Volumes
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Statistics and Probability
Statistics
Probability
Internal Assessment
Definition
Statistics: Statistics is the area of study dealing with the collection, presentation, analysis of data as well as drawing of meaningful conclusions from the data.
Statistics
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The word ‘statistics’ appears to have been derived from the Latin word ‘status’ meaning ‘a (political) state’.
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Statistics is the area of study dealing with the collection, presentation, analysis of data as well as drawing of meaningful conclusions from the data.
- Sir Ronald Fisher was a British statistician and biologist who was known for his contributions to experimental design and population genetics. He is known as the father of modern statistics and experimental design.
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Related QuestionsVIEW ALL [51]
The times, in seconds, taken by 150 athletes to run a 110 m hurdle race are tabulated below:
| Class | 13.8 – 14 | 14 – 14.2 | 14.2 – 14.4 | 14.4 – 14.6 | 14.6 – 14.8 | 14.8 – 15.0 |
| Frequency | 2 | 4 | 5 | 71 | 48 | 20 |
The number of athletes who completed the race in less than 14.6 seconds is:
Find the mean, median and mode of the following data
| Class | 0 – 20 | 20 – 40 | 40 – 60 | 60 – 80 | 80 – 100 | 100 – 120 | 120 – 140 |
| Frequency | 6 | 8 | 10 | 12 | 6 | 5 | 3 |
Find the mean, median and mode of the following data:
| Marks obtained | 25 - 35 | 35 – 45 | 45 – 55 | 55 – 65 | 65 – 75 | 75 - 85 |
| No. of students | 7 | 31 | 33 | 17 | 11 | 1 |
The time, in seconds, taken by 150 athletes to run a 100 m hurdle race are tabulated below:
| Time (sec.) | 13 – 14 | 14 – 15 | 15 – 16 | 16 – 17 | 17 – 18 | 18 – 19 |
| Number of Athletes | 2 | 4 | 5 | 71 | 48 | 20 |
The number of athletes who completed the race in less than 17 seconds is:
