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Lesson Plan Math Class IX Ch14  Statistics
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E LESSON PLAN FOR CLASS IX FOR MATH TEACHER
TEACHER'S NAME : DINESH KUMAR  SCHOOL : RMB DAV CENTENARY PUBLIC SCHOOL, NAWANSHAHR 
SUBJECT : MATHEMATICS  CLASS : IX STANDARD BOARD : CBSE 
LESSON TOPIC / TITLE : CHAPTER 14: STATISTICS  ESTIMATED DURATION: This lesson is divided into ten modules and it is completed in ten class meetings. 
 Introduction
of statistics.
 Explanation
of Bar graph.
 Histogram
with varying base lengths
 Frequency
Polygon.
 Concept of Mean, Mode and Median.
S. No 


1 
The word ‘statistics’ appears to have been
derived from the Latin word ‘status’ meaning ‘a (political) state’. In its
origin, statistics was simply the collection of data on different aspects of
the life of people. Now Statistics deals with collection, organization,
analysis and interpretation of data. 

2 
Activity Divide the students of the class into four
groups. Allot each group the work of collecting one of the following kinds of
data: 

3 
When students will collect data then teacher will conclude the following points. Primary Data: In the first case, when the information was collected by the investigator herself or himself with a definite objective in her or his mind, the data obtained is called primary data. Secondary data: In the second case, when the information was gathered from a source which already had the information stored, the data obtained is called secondary data. 

4 
Presentation of Data: Here teacher will explain the different methods of representing the grouped and ungrouped data. The methods are as follows: Representing the data by using Frequency Distribution table for ungrouped and grouped data by using tally marks and frequency. Teacher will explain the topic by taking some examples.


5 
Geometrical Representation of Data There are three methods of representing the data geometrically a) Bar Graph b) Histogram c) Frequency Polygon d) Frequency Ogive (To be studied in class 10) 

6 

7 

8 
Frequency Polygon. Teacher will explain the method of making the frequency polygon by taking some demo questions. Teacher may also provide some problems to the students to assess their performance and learning skills. 

9 
Different measures of Central Tendency Now teacher will introduce the different modes of central tendency. There are three measures of central tendency Mean, Mode, Median Mode of the ungrouped data Most frequent observation is called mode 

10 
Mean of ungrouped frequency Mean is the method of finding the average of the given data. Mean of ungrouped data without frequencies = = Mean = Here f_{i } is the frequencies 

11 
Median of ungrouped data Median can be calculated by using the following steps 1) Write the given observations in ascending order. 2) Count the number of observations(n). 3) If n is odd then Median = observation 4) If n is even then Median = REFERENCES:NCERT text book NCERT EXEMPLER https://www.cbsemathematics.com 
 Different types of data.
 Frequency distribution table.
 Different geometrical methods of representing the data (Bar Graph, Histogram, Frequency Polygon)
 Different methods of central tendency (Mean, Mode, Median)
Solve N.C.E.R.T problems with examples.
Students can also prepare a Power Point Presentation showing different methods of finding central tendency.
Students can solve the assignment on statistics given by the teacher
Class Test, Oral Test, worksheet and Assignments can be made the part of assessment. Retest(s) will be conducted on the basis of the performance of the students in the test.
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