Range from a Frequency Distribution with Ungrouped Data
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Video I @ 11:35
Courtesy: The Math Prof
https://www.youtube.com/channel/UCbWJ4vNe_H4gnBZng-4YQQA
Courtesy: The Math Prof
https://www.youtube.com/channel/UCbWJ4vNe_H4gnBZng-4YQQA
Video II @ 0:31
Courtesy: Maths Explained
https://www.youtube.com/channel/UCyUbXK--ig5V8xJOBsxvoNA
Courtesy: Maths Explained
https://www.youtube.com/channel/UCyUbXK--ig5V8xJOBsxvoNA
Practice Questions - Range from a Frequency Distribution
Courtesy: Mathematics Monster
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Courtesy: Worksheet Math
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Interquartile & Semi Interquartile Range (Quartile Deviation) from a Frequency Distribution
Mathematics: A Complete Course with CXC Questions - Volume 1, Page 402 - 404
Recall: Definition and Formula I
Courtesy: EDUCBA
https://www.educba.com
https://www.educba.com/quartile-formula
Courtesy: EDUCBA
https://www.educba.com
https://www.educba.com/quartile-formula
Definition II
Courtesy: Online Math Learning
https://www.onlinemathlearning.com
https://www.onlinemathlearning.com/quartile.html
Courtesy: Online Math Learning
https://www.onlinemathlearning.com
https://www.onlinemathlearning.com/quartile.html
General steps involved in finding the Interquartile and Semi interquartile range from a frequency distribution with ungrouped data
Step 1: Create a Cumulative Frequency Column onto a Frequency Distribution
Step 2: Find the position of the Lower Quartile using the formula - (n+1) * 1/ 4
Step 3: Read Across the Cumulative Frequency Column to determine the Lower Quartile (Q1)
Step 4: Find the position of the Upper Quartile using the formula - (n+1) * 3/ 4
Step 5: Read Across the Cumulative Frequency Column to determine the Upper Quartile (Q3)
Step6: Inter Quartile Range (I.Q.R) = Q3 - Q1
Step 7: Semi Inter Quartile Range (S.I.Q.R) = (Q3 - Q1) / 2 or I.Q.R / 2
Step 2: Find the position of the Lower Quartile using the formula - (n+1) * 1/ 4
Step 3: Read Across the Cumulative Frequency Column to determine the Lower Quartile (Q1)
Step 4: Find the position of the Upper Quartile using the formula - (n+1) * 3/ 4
Step 5: Read Across the Cumulative Frequency Column to determine the Upper Quartile (Q3)
Step6: Inter Quartile Range (I.Q.R) = Q3 - Q1
Step 7: Semi Inter Quartile Range (S.I.Q.R) = (Q3 - Q1) / 2 or I.Q.R / 2
Video II
Courtesy: Mr. Kruger's Mathematics
https://www.youtube.com/channel/UCvgR8tDDpMknbFN_ps8bMYw
Courtesy: Mr. Kruger's Mathematics
https://www.youtube.com/channel/UCvgR8tDDpMknbFN_ps8bMYw
Video III @ 3:04
Courtesy: J Welton
https://www.youtube.com/channel/UCx2QGtjU3QrQWhcpjwUrcBA
Courtesy: J Welton
https://www.youtube.com/channel/UCx2QGtjU3QrQWhcpjwUrcBA
Practice Questions
Courtesy: Raymond Toolsie
Mathematics: A Complete Course with CXC Questions :
Volume 1, Page 406, Exercise 8p Q7 & Q8
Courtesy: Raymond Toolsie
Mathematics: A Complete Course with CXC Questions :
Volume 1, Page 406, Exercise 8p Q7 & Q8
Solutions
Courtesy: Math Minds Academy
https://www.mathmindsacademy.com
Courtesy: Math Minds Academy
https://www.mathmindsacademy.com
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