How to Organize Data? Video Lecture - Class 7

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at the end of these three examples what
do we understand what is data or why do
we even need to analyze this data now
first of all let us see what is data
data is nothing but collection of facts
or statistics now here in all the three
examples data was represented by numbers
now these facts or these statistics
could be anything it could be the scores
of students in the class it could also
be the number of students present in a
class it could be the amount of money in
rupees earned by a shopkeeper during a
year it could be anything it could be
the amount of fruits that you have
bought throughout the year so it could
be anything any data any information or
any facts that you have now why are
these facts because when you see here
let's say scores of students in the
class so this is like some two facts on
to information right so when you have
too many such facts they are together
termed as data now looking at the last
three examples what what do you think
why do we even need to analyze these
data so that we can take better steps in
future for example if you think about
the attendance of class seven now if the
teacher is able to analyze the
attendance data well then she would be
able to handle students or he would be
able to ask students to be more punctual
those students who are not attending
classes regularly right similarly if a
proper analysis of the scores by
different players in the cricket team is
done then the captain can actually you
know make better decisions so that the
team as a whole can work better in
future similarly the shopkeeper after
analyzing the data can manage his
inventory better in the next year so
this is how the
analysis of data helps us so now we talk
about organizing data because we saw
that with these kind of half-assed data
we we really go nowhere
we actually are unable to analyze the
data properly therefore here we will see
how there can be organized data now
let's say the data that is given to you
is the score of students in a particular
class so here you see seventy five forty
five seventy seventeen forty to
fifty-five sixty one seventy one eighty
two so these are the marks obtained by
various students in a class now let's
say that the teacher has been asked to
organize this data in a better way so
that he can you know give answers to
such questions like whose code maximum
whose gold minimum and what was like the
overall performance of the class so that
he is able to answer all these questions
in an easier way because now if you look
at this given data on the screen it is
very difficult for the teacher to handle
this data so let us look at some better
ways of organized organizing the same
set of data so one we could be putting
it into a tabular form so you are
putting it into a table so where you
have a column which has the names of the
students and you have another column
where you have their respective scores
now do you think this is a better way
than what we were seeing before yes
because in this case you can very
specifically see with students called
how much so that's one advantage the
second advantage is that in this table
the way you see the data so the data
like earlier the data they all in that
words were written I mean it was just a
former separating the numbers so it is
very difficult to read out so many data
but in this case you have one below and
other so it is like more it can be read
more distinctly so that is also it is
more convenient right so this is
infinitely a better way of organizing
the data now a yet better way of
organizing the data now see here what we
have done we have just mentioned that
how many students have scored less than
50 now in this case if somebody asks you
how many students scored less than 50
you actually need to find it count the
instead of that if you already prepare a
table where you see number of students
who scored less than 50 who scored more
than 70 who scored between 50 and 70 and
if you prepare it even like this then it
becomes very easier to represent this
data before someone so you see these are
better ways of organizing the same set
of data so here in this lesson we are
going to focus on how do we handle data
in a better way how do we organize them
better how do we represent them better
how do we get extract information from a
set of data so these are some of the
targets that we have from data handling
so these are some of the better ways
that we can organize a given set of data
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