Final Cover - For Printing

The idea of median may be explained to the child using paper folding. As the child himself is facilitated to perform the activit ...

The idea may be taught orally with the assistance of paper folding. Angle bisector A line which divides the angle of a triangle ...

Perpendicular bisector of the side of a triangle A line (ray or segment) which is perpendicular to a segment at its midpoint is ...

STATISTICS Statistics Statistics is a branch of mathematics which deals with the collection, presentation, analysis and interpre ...

Population The set of all observations or objects in a particular category or group is called population. Eg. : People, Animals ...

47, 58, 94, 87, 60, 75, 34, 27, 82, 63, 56, 50, 59, 40, 28, 12, 18, 77, 69, 10. In the above data, no classification is made and ...

Eg. : Consider the data in item 6. The data can be grouped in the form of a frequency distribution table as follows: Present thi ...

No. of students studying in different schools Histogram The histogram is closest to the bar graph. If the bars in a graph drawn ...

Frequency Polygon A frequency polygon is obtained by joining the mid points of the upper sides of the bars of a histogram by me ...

A (450) B (280) C (400) D (480) E (525) Pie Chart Another mode of representing the data is through the use of a pie chart in wh ...

Ogive The cumulative frequency of a particular class is obtained by adding all the frequencies up to and inclusive of that clas ...

...

...

Eg. : Find the median : 12, 54, 13, 47, 38 In ascending order : 12, 13, 38, 47, 54 Here n = 5, odd. Therefore, median = n 21 ite ...

Eg. : Find out the range of the data : 27, 28, 34, 36, 39, 59 Range = Maximum value – Minimum value = 59 – 27 = 32 Standard dev ...

2 2 n x n x ⎟ ⎠ ⎜ ⎞ ⎝ σ= ∑ ⎛∑ 2 8 - 120 8 (^1940) ⎟ ⎠ ⎜ ⎞ ⎝ = ⎛ = 242. 5 − 225 = 17. 5 σ = 4.18 Variance Variance is the squa ...

PROBABILITY Experiment An experiment is an activity carried out in anticipation of a result out of it. Tossing a coin, rolling ...

Outcome The outcomes of the experiment are also known as sample points. As the child is aware of the ideas of trial and event ...

Eg. : In tossing a coin getting a head or getting a tail are mutually exclusive events, because the occurance of head automatica ...

...