Graphical representation of frequency distribution - Business Mathematics & Statistics Video Lecture | SSC CGL Tier 2 - Study Material, Online Tests, Previous Year

hello I'm leeann's far in this section
we will discuss frequency distributions
and graphs specifically we will cover
the following topics we will construct
and analyze a frequency distribution we
will make a bar graph we will make a
line graph and we will draw a circle
graph let's begin by constructing a
frequency distribution these are the
number of college credits completed by
30 bank employees at Franklin Bank we
wish to construct a frequency
distribution using these credits a
frequency distribution is a table that
shows the frequency of occurrence so if
we look at the number of college credits
being 0 to 24 we count the number of
employees who have earned between 0 and
20 for college credits and we find that
that number is 4 we count the number of
employees who have earned between 25 and
49 credits and we find that number is 3
we count the number of employees who
have earned between 50 and 74 credits
and we find that number is 6 we count
the number of employees who have earned
between 75 and 99 credits and we find
that number is 3 we count the number of
employees who have earned between 100
and 124 credits and we find that number
to be 5 and we count the number of
employees who have earned between 125
and 149 college credits and we find that
nine employees have earned this number
of credits and here we have a frequency
distribution now let's make a bar graph
let's use our bank employees and the
number of college credits they have
completed to construct a bar graph a bar
graph is a graph in which the height of
the bar represents the frequency of the
value
so we look at the number of credits
earned by the employees as being zero to
twenty four twenty five to forty nine
fifty to seventy four seventy five to
ninety nine credits one hundred to 124
125 to 149 and we make bars according to
the frequencies from our frequency
distribution we see that for employees
earned zero to twenty four credits three
employees earn twenty five to forty nine
credits six employees fifty to seventy
four three employees seventy five to
ninety nine credits five employees one
hundred two hundred twenty four and nine
employees 125 to 149 now let's make a
line graph we will use our bank
employees and the number of credits they
have earned to make a line graph so we
will see that four employees aren't zero
to twenty four credits three twenty five
to forty nine six one fifty to seventy
four three seventy five to ninety nine
credits five one hundred two hundred
twenty four and nine 125 to 149 credits
now let's construct a circle graph the
annual sells that antique furnishings
are divided into five categories
finishing materials has annual sales of
twenty five thousand dollars desks sold
$80,000 bedroom sets $120,000 dining
room sets a hundred thousand dollars and
other with seventy five thousand dollars
let's make a circle graph showing this
distribution the circle graph is also
called a pie chart and we divide the pie
up into percentages such that finishing
materials is six point two five percent
of the total desks twenty percent of the
total
bedroom sets thirty percent of the total
dining room sets twenty five percent of
the total and other is eighteen point
seventy five percent
of the total and the slices of the pie
are divided up accordingly to the
percentages in this section we have
looked at frequency distributions and
graphs now go practice for yourself so
you can make a frequency distribution a
bar graph a line graph and a circle
graph