Fifteen grade 9 SPED students took the quiz and their scores are 8,10,3,4,4, 15,15,10,12,12,6,12,13,15,16,find the lower quartile(Q1) and the upper quartile (Q3).
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Answer:
lower quartile solution:
3,4,4,6,8,10,10,12,12,12,13,15,15,15,16
Q1= 1/4(n+1)th
Q1= 1/4 (15+1)th
Q1=1/4(16)th
Q1= 4th #
Q1= 6
FINAL ANS 6
UPPER QUARTILE SOLUTION:
3,4,4,6,8,10,10,12,12,12,13,15,15,15,16
Q3= 3/4(n+1)th
Q3= 3/4 (15+1)th
Q3=3/4(16)th
Q3=12th #
Q3= 15
FINAL ANS 15