Download - Chapter 6 Statistics
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Economics
MedicineSports
Social Sciences
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Can you name some type of these chart?
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In this chapter, there are three graphicalrepresentations of data
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Histogram
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Frequency Poligon
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1.5 2.5 3.5 4.5 5.5
5
10
15
20
25
0.5Weight of the cakes (kg)
x
CumulativeFrequency
yOgie
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Learning Objectives :Learning Objectives :
6! "n#erstan# the conce$t of6! "n#erstan# the conce$t of
class intervalclass interval
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Class %ntervalClass %nterval& large number of& large number of
observations or #ata may beobservations or #ata may be
organise# into a suitableorganise# into a suitablenumber of grou$s or classesnumber of grou$s or classes
before they can be analyse#before they can be analyse#
an# inter$rete#an# inter$rete#
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'able ! : ata of the marks of the stu#ents of the Form &
6+ ,- ./ 6! 0+ 0! 0. 6. ,- ,.
-6 -1 0. 6. 6- 6! 6! ,+ 60 ,-
-6 .+ .1 .+ 00 ,- ,- ,. ,. -6
2arks -!36+ 6!3,+ ,!3.+ .!30+ 0!3!++
Frequenc
y
ClassInteral
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Instructions:
Complete the class intervals base on
the table below.
Volume of
petrol (litre)10-14
Worksheet 1Worksheet 1
!"#!$
%"#%$
%%' (('
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Instructions:
Complete the class intervals base on
the table below.
Height of
student (cm)
Worksheet 2Worksheet 2
!)!)$
!*!*$
!+!+$
!$!$$
!"!"$
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Instructions:
Complete the class intervals base on
the table below.
Volume of
diameters of
circular discs (cm)
3.4-3.6
Worksheet 3Worksheet 3
(+#($
'(#'"''%
')#'*
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Class limitClass limitFor class interval such as 1+3For class interval such as 1+3
14 the en# numbers 1+ an# 114 the en# numbers 1+ an# 1
are calle#are calle# class limitclass limit
'he smaller number4 1+ is the'he smaller number4 1+ is the
lo5er limitlo5er limit an# the largeran# the largernumber4 1 is thenumber4 1 is the u$$er limitu$$er limit
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uestionuestionCan you state the lo5er an#Can you state the lo5er an#
u$$er limit of -307u$$er limit of -307
Lo5er limit 8-Lo5er limit 8-
"$$er limit 8 0"$$er limit 8 0
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9rou$ &ctivity9rou$ &ctivity
Instructions:
Complete the table below.
Volume of
diameters
of circular
discs (cm)
1316 1,310 +3/ 13-
-pper.imit
.o/er
.imit