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Answer:
Minimum = 23,040
Q1 = 30315
Q2 = 31975
Q3 = 31975
Maximum = 33650
Step-by-step explanation:
Ordered data:
23040, 24050, 26520, 28730, 30170, 30460, 30930, 31300, 31860, 31920, 32030, 32320, 32340, 32590, 32700, 32720, 33020, 33190, 33280, 33650
The five number summary :
Minimum = 23,040
Lower quartile (Q1) = 1/4(n+1)th term
n = 20
Q1 = 1/4* (21)th term
Q1 = 5.25 ; (5th + 6th) term / 2
Q1 = (30170 + 30460) / 2 = 30315
Median (Q2) :
Q2 = 1/2* (21)th term
Q2 = 10.5 ; (10th + 11th) term / 2
Q2 = (31920 + 32030) / 2 = 31975
Upper Quartile (Q3) :
Q3 = 3/4* (21)th term
Q3 = 15.75 ; (15th + 16th) term / 2
Q 3 = (32700 + 32720) / 2 = 32710
Maximum : 33650