PPT: Data Handling | Mathematics (Maths) Class 7 (Old NCERT) PDF Download

 Page 1


DA TA
H AND LING
Page 2


DA TA
H AND LING
D AT A
H A N D L IN G
Data handling means to collect
and present the data so that it
can be used in further studies and
to find some results. 
In this chapter, we will study data
handling and its representation in
various forms.
Page 3


DA TA
H AND LING
D AT A
H A N D L IN G
Data handling means to collect
and present the data so that it
can be used in further studies and
to find some results. 
In this chapter, we will study data
handling and its representation in
various forms.
A R I T H M E T I C
M E A N
The most commonly used
representative value for a group of
data is known as the arithmetic
mean or simply the mean.
 It lies between the highest and
the lowest value of data.
Page 4


DA TA
H AND LING
D AT A
H A N D L IN G
Data handling means to collect
and present the data so that it
can be used in further studies and
to find some results. 
In this chapter, we will study data
handling and its representation in
various forms.
A R I T H M E T I C
M E A N
The most commonly used
representative value for a group of
data is known as the arithmetic
mean or simply the mean.
 It lies between the highest and
the lowest value of data.
A R I TH M E T I C
M E A N
Add all the numbers then divide
by the amount of numbers
9, 3, 1, 8, 3, 6
9+3+1+8+3+6 = 30
30     6 = 5
The mean is 5
Page 5


DA TA
H AND LING
D AT A
H A N D L IN G
Data handling means to collect
and present the data so that it
can be used in further studies and
to find some results. 
In this chapter, we will study data
handling and its representation in
various forms.
A R I T H M E T I C
M E A N
The most commonly used
representative value for a group of
data is known as the arithmetic
mean or simply the mean.
 It lies between the highest and
the lowest value of data.
A R I TH M E T I C
M E A N
Add all the numbers then divide
by the amount of numbers
9, 3, 1, 8, 3, 6
9+3+1+8+3+6 = 30
30     6 = 5
The mean is 5
R A N G E
To understand how the
observations are spread out, we
can look at the difference
between the highest and lowest
values. 
To find this difference, we simply
subtract the lowest value from the
highest value. 
This difference is called the range
of the observations.