Chapter 14 - Statistics
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The ability to describe the data in the various forms is called statistics. Statistics not only makes data look good but also easy to understand. The information has to be organized in a proper manner. This chapter includes making of tables, graphs and pie charts. Statistics simply facilitates the comparison.
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What is the structure of our course?
The content in this course includes all the essential points along with the NCERT Solutions for Class 9 Statistics, so you don’t have to worry about the text book questions.
1. Graphical representation of data
This type of presentation includes drawing of tables with data which is very easy to understand. There are different types of graphs such as bar graph, histogram, and frequency polygon.
2. What are the measures of Central Tendency?
Variable usually has a centre point around which the all values lie, and these averages are called measures of central tendency. The most commons are the arithmetic mean, the median and the mode.
3. How to calculate the mean, mode, and median?
There are different formulas to calculate these all like in mean, the total sum of the observation is divided by the number of observations and then multiplied with 100, and to find mode, the number of frequency is observed.
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